Method and device for sending control information in wireless communication system

Abstract

The present disclosure relates to a communication technology and system thereof for integrating a fifth generation (5G) communication system and IoT technology that supports a higher data transmission rate than a fourth generation (4G) system. The present disclosure can be applied to intelligent services based on 5G communication technology and IoT-related technologies. A method for a terminal in a wireless communication system is provided. The method comprises: receiving physical uplink control channel (PUCCH) configuration information from a base station, the physical uplink control channel (PUCCH) configuration information including the number of time slots for repeated PUCCH transmission and the length of the sub-time slot for PUCCH; receiving downlink control information (DCI) from a base station; receiving data on a physical downlink shared channel (PDSCH) based on the DCI from a base station and repeating PUCCH transmission based on the number of time slots and the length of the sub-time slot.

Description

Technical Field

[0001] The present disclosure relates to a method for transmitting control information in a wireless communication system. Background Art

[0002] In order to meet the demand for wireless data services that has increased since the deployment of the fourth generation (4G) communication system, efforts have been made to develop improved fifth generation (5G) or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also referred to as "super 4G networks" or "post-long term evolution (LTE) systems". 5G communication systems are considered to be implemented in higher frequency (mmWave) bands (such as the 60GHz band) in order to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming and massive antenna technology are discussed in 5G communication systems. In addition, in 5G communication systems, system network improvements are being developed based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference elimination, etc. In 5G systems, hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM) and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0003] The Internet, which is a human-centered connectivity network where humans generate and use information, is now evolving into the Internet of Things (IoT), where distributed entities such as things exchange and process information without human intervention. The Internet of Everything (IoE) has emerged, which combines IoT technology and big data processing technology by connecting to a cloud server. For the realization of IoT, technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology" and "security technology" have been required, and sensor networks, machine-to-machine (M2M) communication, machine type communication, etc. have been studied recently. Such an IoT environment can provide smart Internet technology services that create new value for human life by collecting and analyzing data generated between connected things. Through the integration and combination between existing information technology and various industrial applications, IoT can be applied to various fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart appliances, and advanced medical services.

[0004] In view of this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine type communications (MTC), and machine-to-machine (M2M) communications can be implemented through beamforming, MIMO, and array antennas. The application of cloud radio access networks (RANs) as the above-mentioned big data processing technology can also be considered as an example of the fusion between 5G technology and IoT technology.

[0005] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the invention

[0006] [Technical issues]

[0007] An aspect of the present disclosure is to solve at least the above problems and / or disadvantages and to provide at least the advantages described below. Therefore, an aspect of the present invention is to provide a method and apparatus for transmitting control information when a terminal transmits uplink control information, and the transmission of the control information requires high reliability with a small delay time without considering a time slot boundary and a downlink and uplink switching part.

[0008] [Solution]

[0009] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments.

[0010] According to aspects of the present disclosure, a method of a terminal is provided. The method includes: receiving physical uplink control channel (PUCCH) configuration information from a base station, the physical uplink control channel (PUCCH) configuration information including the number of time slots for repeated PUCCH transmission and the length of the sub-time slot for PUCCH; receiving downlink control information (DCI) from the base station; receiving data related to a physical downlink shared channel (PDSCH) from the base station based on the DCI and repeating PUCCH transmission based on the number of time slots and the length of the sub-time slot. A method of a base station of the present disclosure for solving the above-mentioned problem includes: sending physical uplink control channel (PUCCH) configuration information to a terminal, the physical uplink control channel (PUCCH) configuration information including the number of time slots for repeated PUCCH transmission and the length of the sub-time slot for PUCCH; sending downlink control information (DCI) to the terminal; sending data to the terminal on a physical downlink shared channel (PDSCH) based on the DCI and repeatedly receiving uplink control information (UCI) from the terminal on the PUCCH based on the number of time slots and the length of the sub-time slot.

[0011] According to another aspect of the present disclosure, a terminal is provided. The terminal includes a transceiver and at least one processor, the at least one processor is configured to receive PUCCH configuration information from a base station, the PUCCH configuration information includes a plurality of time slots for repeating PUCCH transmission and the length of the sub-time slot for PUCCH, receive downlink control information (DCI) from the base station, receive data related to a physical downlink shared channel (PDSCH) from the base station based on the DCI, and repeat PUCCH transmission based on the number of time slots and the length of the sub-time slot. The base station for solving the above-mentioned problem disclosed in the present disclosure includes a transceiver and at least one processor, at least one processor is configured to send physical uplink control channel (PUCCH) configuration information to the terminal, the physical uplink control channel (PUCCH) configuration information includes the number of time slots for repeating PUCCH transmission and the length of the sub-time slot for PUCCH, send downlink control information (DCI) to the terminal, send data related to a physical downlink shared channel (PDSCH) to the terminal based on the DCI, and repeatedly receive uplink control information (UCI) on the PUCCH based on the number of time slots and the length of the sub-time slot.

[0012] [Beneficial Effects]

[0013] According to the disclosed embodiments, services can be effectively provided in a wireless communication system. Specifically, through the method provided in the present disclosure, a terminal can detect control information sent from a base station with high reliability in a short time.

[0014] Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the accompanying drawings, discloses various embodiments of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 is a schematic diagram showing a transmission structure in the time-frequency domain, i.e., a radio resource area of ​​a fifth generation (5G) or new radio (NR) system according to an embodiment of the present disclosure;

[0017] Figure 2 is a diagram showing a method for allocating data for enhanced mobile broadband (eMBB), ultra-reliable and low latency communication (URLLC), and massive machine type communication (mMTC) in a time-frequency resource region in a 5G or NR system according to an embodiment of the present disclosure;

[0018] Figure 3is a schematic diagram illustrating a physical uplink control channel (PUCCH) transmission method according to an embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0020] Figure 5A is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0021] Figure 5B is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0022] Fig. 6A is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0023] Figure 6B is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0024] Figure 7 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0025] Figure 8 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0026] Fig. 9 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure;

[0027] Fig.10 is a schematic diagram illustrating the operation of a base station according to an embodiment of the present disclosure;

[0028] Fig.11 is a block diagram showing a structure of a terminal according to an embodiment of the present disclosure; and

[0029] Fig.12 is a block diagram showing the structure of a base station according to an embodiment of the present disclosure.

[0030] Throughout the drawings, like reference numerals will be understood to refer to like parts, components and structures. DETAILED DESCRIPTION

[0031] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of the various embodiments of the present invention as defined by the claims and their equivalents. It includes various specific details to assist in understanding, but these details are considered to be exemplary only. Therefore, it will be appreciated by those of ordinary skill in the art that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and structures may be omitted for clarity and brevity.

[0032] The terms and words used in the following description and claims are not limited to the bibliographic meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustrative purposes only and not for limiting the disclosure defined by the attached claims and their equivalents.

[0033] It should be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0034] When describing the embodiments of the present disclosure, descriptions related to technical contents well known in the art and not directly related to the present disclosure will be omitted. The purpose of omitting unnecessary descriptions is to prevent confusion of the main idea of ​​the present disclosure and to convey the main idea more clearly.

[0035] For the same reason, in the accompanying drawings, some elements may be exaggerated, omitted or schematically shown. In addition, the size of each element does not fully reflect the actual size. In the accompanying drawings, the same or corresponding elements have the same reference numerals.

[0036] By referring to the embodiments described below in conjunction with the accompanying drawings, the advantages and features of the present disclosure and the ways to achieve them will be apparent. However, the present disclosure is not limited to the embodiments set forth below, but can be implemented in various different forms. The following embodiments are provided only to fully disclose the present disclosure and inform those skilled in the art of the scope of the present disclosure, and the present disclosure is limited only by the scope of the attached claims. Throughout the specification, the same or similar reference numerals represent the same or similar elements.

[0037] Here, it will be understood that each block of the flowchart and the combination of blocks in the flowchart can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device create a device for implementing the functions specified in one or more flowchart blocks. These computer program instructions can also be stored in a computer-available or computer-readable memory, which can guide the computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-available or computer-readable memory produce a product including an instruction device that implements the functions specified in the flowchart box or box. The computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operations are performed on the computer or other programmable device, thereby generating a computer-implemented process, so that the instructions executed on the computer or other programmable device provide operations for implementing the functions specified in one or more flowchart blocks.

[0038] In addition, each block of the flow chart can represent a module, segment or part of a code, which includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions recorded in the block can occur in sequence. For example, two blocks shown in succession can actually be performed substantially simultaneously, or these blocks can sometimes be performed in reverse order, depending on the functions involved.

[0039] As used herein, "unit" refers to a software element or hardware element that performs a predetermined function, such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC). However, "unit" does not always have a meaning limited to software or hardware. "Unit" can be constructed to be stored in an addressable storage medium or to execute one or more processors. Therefore, "unit" includes, for example, a segment, driver, firmware, microcode, circuit, data, database, data structure, table, array and parameter of a software element, an object-oriented software element, a class element or a task element, a process, a function, an attribute, a procedure, a subroutine, a program code. The element and function provided by the "unit" can be combined into a smaller number of elements or "units", or divided into a larger number of elements or "units". In addition, elements and "units" may be implemented as one or more central processing units (CPUs) in a reproduction device or a secure multimedia card. In addition, the "unit" in the embodiment may include one or more processors.

[0040] Wireless communication systems have moved away from providing early voice-oriented services and have progressed in broadband wireless communication systems that provide high-speed and high-quality packet data services (e.g., communication standards such as 3GPP's High Speed ​​Packet Access (HSPA), Long Term Evolution (LTE) or Evolved Universal Terrestrial Radio Access (E-UTRA), LTE-Advanced (LTE-A), 3GPP2's High Rate Packet Data (HRPD), Ultra Mobile Broadband (UMB), IEEE's 802.16e, etc.). In addition, communication standards for 5G or New Radio (NR) are generated based on the fifth generation wireless communication system.

[0041] In a 5G or NR system, which is a typical example of a broadband wireless communication system, an orthogonal frequency division multiplexing (OFDM) scheme is adopted in a downlink (DL) and an uplink. More specifically, a cyclic prefix OFDM (CP-OFDM) scheme is adopted in a downlink, and a discrete Fourier transform spread OFDM (DFT-S-OFDM) scheme is adopted in addition to CP-OFDM in an uplink.

[0042] The uplink refers to a wireless link via which a terminal (user equipment (UE) or mobile station (MS)) sends data or control signals to a base station (gNode B, eNodeB or base station (BS)), while the downlink refers to a wireless link via which a base station sends data or control signals to a terminal. In such a multiple access scheme, typically, the data or control information of each user can be distinguished by allocating and operating time-frequency resources, and the data or control information of each user is sent at the time-frequency resources so as not to overlap with each other, that is, to establish orthogonality.

[0043] The 5G or NR system adopts a hybrid automatic repeat request (HARQ) scheme, in which the corresponding data is retransmitted in the physical layer when a decoding failure occurs in the initial transmission. In the HARQ scheme, when the receiver fails to correctly decode the data, the receiver sends a negative acknowledgment (NACK) to notify the transmitter of the decoding failure so that the transmitter can resend the data in the physical layer. The receiver improves data reception performance by combining the data retransmitted by the transmitter with the data that has previously failed. In addition, when the receiver correctly decodes the data, the receiver can send information indicating successful decoding (acknowledgement: ACK) to the transmitter to allow the transmitter to send new data.

[0044] The new radio (NR) access technology system, i.e., 5G communication, is designed so that various services are freely multiplexed on time and frequency resources, and therefore, waveforms / digital sciences, reference signals, etc. can be dynamically or freely allocated according to the needs of the corresponding services. In order to provide the best service to the terminal in wireless communication, it is important to optimize data transmission by measuring the amount of interference and channel quality, so accurate channel state measurement is necessary. However, unlike 4G communication where the channel and interference characteristics do not change significantly according to the frequency resources, in the case of 5G or NR channels, because the channel and interference characteristics change significantly according to the service, it is necessary to support subsets of the frequency resource group (FRG) level, which can be measured by division.

[0045] In a 5G or NR system, the types of services supported can be divided into categories such as enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low latency communication (URLLC). eMBB is a service for high-speed transmission of high-capacity data, mMTC is a service for minimizing terminal power and accessing multiple terminals, and URLLC is a service for high reliability and low latency. Depending on the type of service applied to the terminal, different requirements may apply.

[0046] Among the above services, because URLLC services are designed for high reliability and low latency, it may be necessary to send control information and data information, which can be sent at a low coding rate on the physical channel. In LTE's narrowband Internet of Things (NB-IoT) or MTC services, repeated transmission of control information is introduced. The purpose of the introduction is to provide high coverage for terminals with small bandwidth, and the delay time is not fully considered. The minimum repeated transmission unit of the control information is fixed in the unit of the LTE-based subframe.

[0047] In order to support URLLC services in NR or 5G systems, it is necessary to adopt a control information repetition transmission mode, which can improve reliability while requiring less waiting time. Therefore, the present disclosure considers the case where control information is repeatedly sent in a time slot. In addition, the present disclosure considers the case where control information that can be transmitted on the time slot boundary is repeatedly transmitted. Through the method provided in the present disclosure, the terminal can detect the control information sent from the base station at a faster time and with higher reliability.

[0048] In the present disclosure, terms are defined based on corresponding functions and may vary according to the intention or use of the user or operator. Therefore, the definition should be based on the content of the entire specification. In the following, a base station is a subject that performs resource allocation on a terminal, and may be at least one of a gNode B (gNB), an eNode B (eNB), a Node B, a base station (BS), a wireless access unit, a base station controller, or a node on a network. The terminal may include a UE, an MS, a cellular phone, a smart phone, a computer, or a multimedia system capable of performing a communication function. In the present disclosure, a downlink (DL) is a wireless transmission path for a signal sent from a base station to a terminal, and an uplink (UL) refers to a wireless transmission path for a signal sent from a terminal to a base station. In the following, in the present disclosure, an NR system is described as an example, but the present disclosure is not limited thereto. The embodiments may be applied to various communication systems having similar technical backgrounds or channel forms. In addition, according to the determination of those skilled in the art, the present disclosure may be applied to other communication systems via some modifications without departing from the scope of the present disclosure.

[0049] In the present disclosure, the terms of physical channels and signals of the related art may be used interchangeably with data or control signals. For example, although a physical downlink shared channel (PDSCH) is a physical channel through which data is transmitted, the PDSCH may be referred to as data in the present disclosure.

[0050] In the present disclosure, higher signaling is a signal transmission method in which a signal is sent from a base station to a terminal by using a downlink data channel of a physical layer, or a signal is transmitted from a terminal to a base station by using an uplink data channel of a physical layer, wherein the higher signaling may be referred to as a radio resource control (RRC) signaling or a media access control (MAC) control element (CE, hereinafter referred to as a control element).

[0051] Recently, as research on next-generation communication systems progresses, various methods for scheduling communications with terminals are being discussed. Therefore, an effective scheduling and data transmission / reception method based on the characteristics of the next-generation communication system is required. Therefore, in order to provide a plurality of services to a user in a communication system, a method capable of providing each service to a user in the same time interval according to the characteristics of the service and a device using the method are required.

[0052] The terminal should receive separate control information from the base station in order to send data to the base station or receive data from the base station. However, in the case of a service type that requires periodic business or low latency / high reliability, data can be sent or received without separate control information. In the present disclosure, such a transmission scheme is referred to as a configured license-based or license-free data transmission method. A method of receiving or transmitting data after receiving a data transmission resource configuration configured via control information and related information may be referred to as a first signal transmission / reception type, and a method of transmitting or receiving data based on previously configured information without control information may be referred to as a second signal transmission / reception type.

[0053] The resource area pre-configured for data transmission / reception of the second signal transmission / reception type may exist periodically. The area may be pre-configured via UL type 1 grant and UL type 2 grant (or SPS), wherein UL type 1 grant is a method configured only via a higher signal, and UL type 2 grant (or SPS) is a method configured by a combination of a higher signal and signal L1 (e.g., downlink control information (DCI)). In the case of UL type 2 grant (or SPS), part of the information is determined via a higher signal, and whether actual data transmission is performed is determined based on signal L1. Here, signal L1 can be broadly classified into a signal indicating the enabling of resources configured as a higher level, and a signal indicating the release of enabled resources again. The present disclosure provides a method for enabling or releasing resources by signal L1 if there are one or more resources configured as a higher level. In the present disclosure, the resources to be used can be indicated by signal L1 in a resource set configured via a higher signal.

[0054] Figure 1 is a schematic diagram showing a transmission structure in the time-frequency domain (i.e., radio resource region) of a 5G or NR system according to an embodiment of the present disclosure.

[0055] refer to Figure 1 , the horizontal axis represents the time domain, and the vertical axis represents the frequency domain in the radio resource region. The minimum transmission unit in the time domain is an OFDM symbol, and N symb OFDM symbols 102 constitute a time slot 106. The length of a subframe may be defined as 1.0 ms, and a radio frame 114 may be defined as 10 ms. The minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth may include a total of NBW subcarriers 104. Such a specific value may be applied variably depending on the system.

[0056] The basic unit of the time-frequency resource region is a resource element (RE) 112 and may be represented by an OFDM symbol index and a subcarrier index. A resource block (RB) 108 may be defined as the number of NRBs of consecutive subcarriers 110 in the frequency domain.

[0057] Usually, the minimum transmission unit of data is RB. In 5G or NR system, usually, N symb =14, N RB =12, and N BW It may be proportional to the bandwidth of the system transmission band. The data rate increases in proportion to the number of RBs scheduled to the terminal. In a 5G or NR system, in the case of a frequency division duplex (FDD) system that operates by dividing the downlink and uplink by frequency, the downlink transmission bandwidth and the uplink transmission bandwidth may be different. The channel bandwidth represents the RF bandwidth corresponding to the system transmission bandwidth. Table 1 below shows the correspondence between the channel bandwidth and the system transmission bandwidth defined in the LTE system, which is the fourth generation of wireless communication, before the 5G or NR system. For example, in an LTE system with a channel bandwidth of 10 MHz, the transmission bandwidth includes 50 RBs.

[0058] Table 1

[0059] <![CDATA[Channel bandwidth BW Channel [MHz]]]> 1.4 3 5 10 15 20 Transmission bandwidth configuration NRB 6 15 25 50 75 100

[0060] In a 5G or NR system, a channel bandwidth wider than that of LTE shown in Table 1 may be used. Table 2 shows the correspondence between the system transmission bandwidth, channel bandwidth, and subcarrier spacing (SCS) in a 5G or NR system.

[0061] Table 2

[0062]

[0063] Scheduling information about downlink data or uplink data in a 5G or NR system is transmitted from a base station to a terminal based on downlink control information (DCI). DCI is defined according to various formats, and DCI can indicate whether the scheduling information is for uplink data (UL grant) or for downlink data (DL grant) according to each format, whether the DCI is a compact DCI with small-size control information, whether spatial multiplexing using multiple antennas is applied, whether the DCI is used to control power, etc. For example, DCI format 1_1, which is scheduling control information (DL grant) for downlink data, may include at least one of the following control information.

[0064] -Carrier indicator: Indicates the frequency at which the carrier transmission is performed

[0065] -DCI format indicator: an indicator that identifies whether the corresponding DCI is for downlink or uplink

[0066] - Bandwidth Part (BWP) indicator: Indicates in which BWP the downlink data is sent

[0067] - Frequency domain resource allocation: Indicates the RBs in the frequency domain allocated for data transmission. The resources to be indicated are determined according to the system bandwidth and the resource allocation scheme.

[0068] -Time domain resource allocation: indicates which OFDM symbol in which time slot the data-related channel is to be sent

[0069] - VRB to PRB mapping: Indicates the scheme by which virtual RB (hereinafter referred to as VRB) index and physical RB (hereinafter referred to as PRB) index will be mapped

[0070] - Modulation and Coding Scheme (MCS): Indicates the coding rate and modulation scheme used for data transmission. For example, a coding rate value may be indicated, where the coding rate value can inform the transport block size (TBS) and channel coding information in addition to information indicating whether the modulation scheme is quadrature phase shift keying (QPSK), quadrature amplitude modulation (16QAM), 64QAM, or 256QAM.

[0071] - Code Block Group (CBG) transmission information: When retransmission of a CBG is configured, information indicating which CBG is transmitted

[0072] -HARQ process number: indicates the HARQ process number

[0073] - New data indicator: indicates whether the transmission is a HARQ initial transmission or a retransmission

[0074] - Redundancy version: indicates the redundancy version of HARQ

[0075] - Physical Uplink Control Channel (PUCCH) resource indicator: Indicates the PUCCH resource used for transmission of ACK / NACK information for downlink data

[0076] PDSCH to HARQ feedback timing indicator: Indicates the time slot in which ACK / NACK information for downlink data is transmitted

[0077] - Transmission Power Control (TPC) command for PUCCH: Indicates the transmission power control command for PUCCH, the uplink control channel

[0078] The time domain resource allocation for physical uplink shared channel (PUSCH) transmission may be indicated by information related to the time slot in which the PUSCH is transmitted, the starting OFDM symbol position S at the time slot, and the number of OFDM symbols to which the PUSCH is mapped, L. The above S may be a relative position from the start of the time slot, L may be the number of consecutive OFDM symbols, and S and L may be determined based on a start and length indicator value (SLIV) as defined below.

[0079] If L-1)≤7 then

[0080] SLIV=14·(L-1)+S

[0081] otherwise

[0082] SLIV=14·(14-L+1)+(14-1-S)

[0083] Where 0 <L≤14-S

[0084] In a 5G or NR system, typically, a table can be configured via RRC configuration, which includes information about the time slot in which the PUSCH is sent, the PUSCH mapping type, and the SLIV value in one row. Subsequently, in the time domain resource allocation of the DCI, the base station can transmit information about the time slot in which the PUSCH is sent, the PUSCH mapping type, and the SLIV value to the terminal by indicating the index value in the configured table. This method can also be applied to PDSCH.

[0085] Specifically, if the base station sends a time resource allocation field index m for PDSCH scheduling included in the DCI to the terminal, the transmission indicates a combination of DRMS ​​type A position information corresponding to m+1 in the table showing time domain resource allocation information, PDSCH mapping type information, time slot index K0, data resource start symbol S, and data resource allocation length L. For example, Table 3 below is a table including PDSCH time domain resource allocation information based on a normal cyclic prefix.

[0086] Table 3

[0087]

[0088]

[0089] In Table 3, DMRS-Type A-Position is a field indicating the symbol position of a demodulation reference signal (DMRS) transmitted in one slot indicated by a system information block (SIB), which is a piece of terminal common control information. The possible value of the field is 2 or 3. When the total number of symbols constituting one slot is 14 and the first symbol index is 0, 2 refers to the third symbol, and 3 refers to the fourth symbol.

[0090] In Table 3, the PDSCH mapping type is information indicating the position of the DMRS in the scheduled data resource region. If the PDSCH mapping type is A, the DMRS is always transmitted or received at the symbol position determined by the DMRS type A position, regardless of the allocated data time domain resource. If the PDSCH mapping type is B, the position of the DMRS used for transmission / reception is always the first symbol of the allocated data time domain resource. In other words, PDSCH mapping type B does not use DMRS type A position information.

[0091] In Table 3, K 0 Refers to the offset between the time slot index to which the physical downlink control channel (PDCCH) on which the DCI is sent belongs and the time slot index to which the PUSCH or PDSCH scheduled based on the DCI belongs. For example, if the time slot index of the PDCCH is n, the time slot index of the PUSCH or PDSCH scheduled based on the DCI of the PDCCH is n+K 0 In Table 3, S refers to the starting symbol index of the data time domain resource in one time slot. Based on the normal cyclic prefix, the possible S value ranges from 0 to 13. In Table 3, L refers to the data time domain resource interval length in one time slot. The possible L value ranges from 1 to 14.

[0092] In 5G or NR systems, the PUSCH mapping types are defined by type A and type B. In PUSCH mapping type A, the first OFDM symbol of the DMRS OFDM symbol is located in the second or third OFDM symbol of the time slot. In PUSCH mapping type B, the first OFDM symbol of the DMRS OFDM symbol is located in the first OFDM symbol in the time domain resources allocated for PUSCH transmission. The above method for PUSCH time domain resource allocation can also be applied to PDSCH time domain resource allocation.

[0093] DCI may be transmitted on a physical downlink control channel (PDCCH) (or control information, hereinafter, PDCCH and control information may be used interchangeably) as a downlink physical control channel via channel coding and modulation. In general, DCI is independently scrambled using a specific radio network temporary identifier (RNTI) (or terminal identifier) ​​of each terminal to add a cyclic redundancy check (CRC) thereto, channel-coded, and then configured to each independent PDCCH for transmission. PDCCH is mapped to a control resource set (CORESET) configured for the terminal and transmitted.

[0094] Downlink data may be transmitted on a physical downlink shared channel (PDSCH), which is a physical channel for downlink data transmission. The PDSCH may be transmitted after a control channel transmission interval, and scheduling information in the frequency domain (e.g., specific mapping position, modulation scheme, etc.) may be determined based on the DCI transmitted via the PDCCH.

[0095] Through the MCS in the control information constituting the DCI, the base station notifies the terminal of the modulation scheme applied to the PDSCH to be transmitted and the size of the data to be transmitted (transport block size, TBS). In an embodiment of the present disclosure, the MCS may include 5 bits or may include more or less than 5 bits. The TBS corresponds to the size of the transport block (TB) before channel coding for error correction is applied to the data TB to be transmitted by the base station.

[0096] In the present disclosure, a transport block (TB) may include a medium access control (MAC) header, a MAC CE, one or more MAC service data units (SDUs), and padding bits. Alternatively, a TB may represent a MAC protocol data unit (PDU) or a data unit for conversion from the MAC layer to the physical layer.

[0097] The modulation schemes supported by 5G or NR systems are quadrature phase shift keying (QPSK), 16-QAM, 64-QAM, and 256-QAM, which are modulation orders Q of 2, 4, 6, and 8, respectively. m For example, 2 bits per symbol may be transmitted in the case of QPSK modulation, 4 bits per OFDM symbol may be transmitted in the case of 16QAM modulation, 6 bits per symbol may be transmitted in the case of 64QAM modulation, and 8 bits per symbol may be transmitted in the case of 256QAM modulation.

[0098] Figure 2 is a schematic diagram showing a method for allocating data for eMBB, URLLC, and mMTC in a time-frequency resource region in a 5G or NR system according to an embodiment of the present disclosure.

[0099] Reference Figure 2, data for eMBB, URLLC and mMTC can be allocated in the entire system frequency band 200. If URLLC data 203, 205 and 207 are generated and need to be sent, and eMBB data 201 and mMTC data 209 are allocated and sent in a specific frequency band, the transmitter can clear the part to which eMBB data 201 and mMTC data 209 have been allocated, or URLLC data 203, 205 and 207 can be sent without sending eMBB data 201 and mMTC data 209. In the above service, URLLC needs to reduce waiting time, and therefore URLLC data can be allocated to a part of the resources to which eMBB data or mMTC data has been allocated so as to be sent. If URLLC data is also allocated to the resources to which eMBB data has been allocated and is sent in the resources, eMBB data may not be sent in overlapping time-frequency resources, and thus the transmission performance of eMBB data may be reduced. For example, eMBB data transmission failure due to URLLC allocation may occur.

[0100] Figure 3 is a schematic diagram illustrating a PUCCH transmission method according to an embodiment of the present disclosure.

[0101] In a 5G or NR system, a terminal sends control information to a base station via a physical uplink control channel (PUCCH). The control information sent via the PUCCH may include at least one of HARQ-ACK, CSI, and scheduling request (SR) information.

[0102] The HARQ-ACK information is used to transmit the demodulation / decoding result of the TB received by the terminal from the base station via the Physical Downlink Shared Channel (PDSCH). The HARQ-ACK information is a value of success or failure and is reported to the base station.

[0103] The CSI is information obtained through channel estimation based on the CSI-RS received by the terminal from the base station.

[0104] The SR is information for requesting resources for a physical uplink shared channel (PUSCH) if there is data to be transmitted by the terminal to the base station.

[0105] refer to Figure 3 , shows the process of the terminal sending HARQ-ACK information via PUCCH. Figure 3In the present invention, the terminal receives DCI via PDCCH 300, and the terminal schedules resources for PDSCH 302 and PUCCH 304 via DCI. Specifically, the terminal can partially configure the range of information that can be indicated in DCI via a higher signal. For DCI, one piece of information can be selected from the information configured via the higher signal. In the present disclosure, DCI can be used to replace signal L1. Higher signals can be collectively referred to as all signals above L1.

[0106] Alternatively, the periodic PUCCH resource 306 may be always configured as a higher signal without receiving DCI. The corresponding PUCCH resource may be used to send SR information.

[0107] Table 4 below shows a method of transmitting the PUCCH.

[0108] Table 4

[0109] 9.2 UCI Report Physical Uplink Control Channel

[0110] The UCI types reported in PUCCH include HARQ-ACK information, SR and CSI. The UCI bits include HARQ-ACK information bits (if any), SR information bits (if any) and CSI bits (if any). The HARQ-ACK information bits correspond to the HARQ-ACK codebook as described in subclause 9.1.

[0111] As defined in [4, TS 35.211], the UE may One or two PUCCHs are sent on the serving cell in different symbols within the time slot of the UE. When the UE sends two PUCCHs in the time slot, at least one of the two PUCCHs uses PUCCH format 0 or PUCCH format 2.

[0112] For determining the number of PRBs in subclauses 9.2.3, 9.2.5.1 and 9.2.5.2, if the corresponding number of UCI bits is greater than or equal to 360, the UE assumes 11 CRC bits, otherwise, the UE determines the number of CRC bits based on the number of respective UCI bits as described in [5, TS 38.212].

[0113] 9.2.1 PUCCH resource set

[0114] If the UE does not have a dedicated PUCCH resource configuration provided by PUCCH-ResourceSet in PUCCH-Config, the PUCCH resource set is provided by PUCCH-ResourceSet with an index to a row of Table 9.2.1-1 for transmission in HARQ-ACK information on PUCCH in the initial UL BWP of RPB. The PUCCH resource set includes sixteen resources, each corresponding to the PUCCH format, first symbol, duration, PRB offset and the set of cyclic shift indices used for PUCCH transmission. The UE transmits PUCCH using frequency hopping. An orthogonal cover code with index 0 is used for PUCCH resources with PUCCH format 1 in Table 9.2.1-1. The UE transmits PUCCH using the same spatial transmission filter as for PUSCH transmission scheduled by RAR UL grant as described in subclause 8.3.

[0115] As described in [12, TS 38.331], the UE is not expected to generate more than one HARQ-ACK information bit before establishing an RRC connection.

[0116] If the UE provides HARQ-ACK information in a PUCCH transmission in response to detecting DCI format 1_0 or DCI format 1_1, the UE determines that the PUCCH resource has index r PUCCH , 0≤r PUCCE ≤15, such as Where N CCE is the number of CCEs in the CORESET for PDCCH reception with DCI format 1_0 or DCI format 1_1, as described in subclause 10.1, n CCE，0 is the index of the first CCE received for PDCCH, and Δ PRI It is the value of the PUCCH resource indicator field in DCI format 1_0 or DCI format 1_1.

[0117] if

[0118] The UE determines the PRB index of the PUCCH transmission in the first hop as And the PRB index of the PUCCH transmission in the second hop is determined as Where N CS is the total number of initial cyclic shift indices in the following initial cyclic shift indices set

[0119] UE determines as r PUCCH mod N CS The initial circular shift index in the initial circular shift index of

[0120] if

[0121] -The UE determines the PRB index of the PUCCH transmission in the first hop as And the PRB index of the PUCCH transmission in the second hop is determined as

[0122] -UE determines as (r PUCCH -8)mod N CS The initial circular shift index in the initial circular shift index of

[0123] Table 9.2.1-1: PUCCH resource set before dedicated PUCCH resource configuration

[0124]

[0125]

[0126] If the UE has a dedicated PUCCH resource configuration, the UE is provided by higher layers with one or more PUCCH resources.

[0127] PUCCH resources include the following parameters:

[0128] -PUCCH resource index provided by pucch-ResourceId (pucch resource ID)

[0129] - by starting the PRB before frequency hopping or for the first PRB without frequency hopping

[0130] - Index of the first PRB after frequency hopping by secondHopPRB.

[0131] - Instruction of frequency hopping within the time slot via instraSlotfrequency

[0132] -Configuration of the PUCCH format provided by format, from PUCCH format 0 to PUCCH format 4

[0133] If the format indicates PUCCH format 0, the PUCCH format configured for the PUCCH resource is PUCCH format 0, where the PUCCH resource also includes an index for an initial cyclic shift provided by the initial cyclic shift, the number of symbols for PUCCH transmission provided by nrofSymbol, and the first symbol for PUCCH transmission provided by the start symbol index.

[0134] If the format indicates a PUCCH format, the PUCCH format configured for the PUCCH resource is PUCCH format 1, wherein the PUCCH resource also includes an index for an initial cyclic shift provided by an initial cyclic shift, the number of symbols for PUCCH transmission provided by nrofSymbol, the first symbol for PUCCH transmission provided by a start symbol index, and an index for an orthogonal cover code provided by timeDomainOCC.

[0135] If the format indicates PUCCH format 2 or PUCCH format 3, the PUCCH format configured for the PUCCH resource is PUCCH format 2 or PUCCH format 3 respectively, where the PUCCH resource also includes multiple PRBs provided by nrofPRB, multiple symbols for PUCCH transmission provided by nrofSymbol, and the first symbol for PUCCH transmission provided by the start symbol index.

[0136] If the format indicates PUCCH format 4, the PUCCH format configured for the PUCCH resource is PUCCH format 4, where the PUCCH resource also includes multiple symbols for PUCCH transmission provided by nrofSymbol, the length of the orthogonal cover code provided by ooc-Length, the index of the orthogonal cover code provided by occ-Index, and the first symbol for PUCCH transmission provided by the start symbol index.

[0137] The UE can be configured with up to four sets of PUCCH resources. The PUCCH resource set is provided by a PUCCH resource set and is associated with a PUCCH resource set index provided by a PUCCH resource set ID, associated with a set of PUCCH resource indices provided by a resource list, the resource list provides a PUCCH resource set used in a PUCCH resource set, and is associated with the maximum number of UCI information bits that the UE can use to transmit. The PUCCH resource set is provided by pucch-ResourceSetId. For the first PUCCH resource set, the maximum number of UCI information bits is 2. The maximum number of PUCCH resource indices for a PUCCH resource set is provided by maxNrojPUCCH-ResourcesPerSet. The maximum number of PUCCH resources in the first PUCCH resource set is 32, and the maximum number of PUCCH resources in other PUCCH resource sets is 8.

[0138] If the UE sends O UCI UCI information bits, which include HARQ-ACK information bits, the UE determines the PUCCH resource set as

[0139] - If OUCI ≤2 includes 1 or 2 HARQ-ACK information bits, then the first set of PUCCH resources has pucch-ResourceSetId=0, and if the transmission of HARQ-ACK information and SR occurs simultaneously, then a positive SR or a negative SR at one SR transmission time, or

[0140] - If provided by higher layers, the second set of PUCCH resources has pucch-ResourceSetId=1, and if 2<0 UCI ≤N 2 , if maxPayloadA1inus1 is provided for a PUCCH resource set with pucch-ResourceSetId=, then N 2 is equal to maxPayloadMinus1; otherwise it is equal to 1706, or

[0141] - If provided by higher layers, the third set of PUCCH resources has pucch-ResourceSetId=2, and if N 2 <O UCI ≤N 3 , if maxPayloadA1inus1 is provided for a PUCCH resource set with pucch-ResourceSetId=, then N 3 is equal to maxPayloadMinus1; otherwise it is equal to 1706, or

[0142] - If provided by higher layers, the fourth set of PUCCH resources has N 3 <O UCI ≤1706

[0143] 9.2.2 PUCCH format for UCI transmission

[0144] If the UE is not sending PUSCH and the UE is sending PUCI, the UE sends UCI in PUCCH using the following method

[0145] -PUCCH format 0, if

[0146] - Transmit more than 1 symbol or 2 symbols.

[0147] - The number of HARQ-ACK information bits with positive or negative SR (HARQ-ACK / SR bits) is 1 or 2

[0148] -PUCCH format 1, if

[0149] - Transmit more than 4 symbols or more,

[0150] -The number of HARQ-ACK / SR bits is 1 or 2

[0151] -PUCCH format 2, if

[0152] - Transmit more than 1 symbol or 2 symbols,

[0153] -The number of UCI bits is greater than 2

[0154] -PUCCH format 3, if

[0155] Transmitting more than 4 or more symbols, the number of UCI bits is greater than 2,

[0156] PUCCH resources do not include orthogonal cover codes

[0157] -PUCCH format 4, if

[0158] - Transmitting more than 4 or more symbols.

[0159] -The number of UCI bits is greater than 2,

[0160] -PUCCH resources include orthogonal cover codes

[0161] The spatial setting for PUCCH transmission is provided by PUCCH-SpatialRelationInfo, if the UE is configured with a single value for PUCCH-SpatialRelationInfo, otherwise, if the UE is provided with multiple values ​​for PUCCH-SpatialRelationInfo, the UE determines the spatial setting for PUCCH transmission as described in [11, TS 38.321]. The UE applies the corresponding operations in [11, TS 38.321] and sends the corresponding settings for the spatial filter for PUCCH 3 ms after the slot in which the UE sends HARQ-ACK information with an ACK value corresponding to the PDSCH reception provided with PUCCH-SpanalRelationInfo.

[0162] - If PUCCH-SpatialRelationInfo provides ssb-Index, the UE transmits PUCCH using the same spatial filter used to receive SS / PBCH blocks with indices specified by ssb-Index for the same serving cell, or if sersingCellId is provided to the serving cell indicated by servingCellId

[0163] - Otherwise, if PUCCH-SpatialRelationInfo provides csi-RS-Index, the UE sends PUCCH using the same spatial filter used to receive the CSI-RS with the index specified by csi-RS-Index for the same serving cell, or if sersingCellId is provided for the serving cell indicated by servingCellId

[0164] - Otherwise, if PUCCH-SpatialRelationInfo provides SRS, the UE sends PUCCH using the same spatial filter used to receive SRS with the index specified by ssb-Index for the same serving cell, or if servingCellId and / or uplinkBWP are provided to the serving cell indicated by servingCellId and / or UL BWP indicated by uplinkBWP

[0165] The number of DMRS symbols used for PDCCH transmission using PUCCH format 3 or 4 is provided by addinonalDMRS.

[0166] Using p / 2-PBSK instead of QPSK, use PUCCH format 3 or 4 indicated by pi2BPSK for PUCCH transmission.

[0167] 9.2.3 UE Procedure for Reporting HARQ-ACK

[0168] The UE does not expect to send more than one PUCCH with HARQ-ACK information in a slot.

[0169] For DCI format 1_0, the PDSCH to HARQ Timing Indicator field value is mapped to {1,2,3,4,5,6,7,8}. For DCI format 1_1, if present, the PDSCH to HARQ Timing Indicator field value is mapped to the value of a set of time slots provided by dl-DataToUL-ACK defined in Table 9.2.3-1.

[0170] For SPS PDSCH reception in slot n, the UE sends PUCCH in slot n+k, where k is provided by the PDSCH to HARQ Timing Indicator field of DCI format 1_0, and activates SPS PDSCH reception in the DCI, if present.

[0171] If the UE detects DCI format 1_1 that does not include the PDSCH to HARQ timing indicator field and schedules PDSCH reception or activates SPS PDSCH reception ending in time slot n, the UE provides corresponding HARQ-ACK information in the PUCCH transmission in time slot n+k, where k is provided by dl-DataToUL-ACK.

[0172] With reference to the time slot used for PUCCH transmission, if the UE detects DCI format 1_0 in the time slot or DCI format 1_1 scheduling PDSCH reception ending in time slot n, or if the UE detects DCI format 1_0 indicating SPS PDSCH release via the PDCCH reception end in the time slot, the UE provides corresponding HARQ-ACK information in the PUCCH transmission in time slot n+k, where k is the number of time slots and is indicated by the PDSCH to HARQ timing indicator field in the DCI format. k=0 corresponds to the last time slot of PUCCH transmission, which overlaps with PDSCH reception or overlaps with PDCCH reception in the case of SPS PDSCH release.

[0173] PUCCH transmissions with HARQ-ACK information are subject to the restrictions on UE transmissions described in subclauses 11.1 and 11.1.1.

[0174]

[0175] For PUCCH transmission with HARQ-ACK information, the UE determines the UCI The PUCCH resource is determined after the PUCCH resource set of HARQ-ACK information bits, as described in subclause 9.2.1. The PUCCH resource determination is based on the PUCCH resource indicator field [5, TS 38.212] in the last DCI format 1_0 or DCI format 1_1, the value of the PDSCH to HARQ Feedback Timing Indicator field in the DCI format 1_0 or DCI format 1_1 indicating the same time slot of the PUCCH transmission detected by the UE, and the UE transmits the corresponding HARQ-ACK information in the PUCCH, wherein for the PUCCH resource determination, the detected DCI formats are first indexed in ascending order on the transmitting cell index of the same PDCCH monitoring occasion, and then indexed in ascending order on the PDCCH monitoring occasion index.

[0176] The PUCCH resource indicator field value is mapped to the value of the PUCCH resource set index (as defined in Table 9.2.3-2) provided by ResourceList for PUCCH resources from the PUCCH resource set, where the set of PUCCH resources is provided by PUCCH-ResourceSet with a maximum of 8 PUCCH resources.

[0177] For the first set of PUCCH resources and when the resource list size R PUCCH When the UE provides HARQ-ACK information in a PUCCH transmission in response to detecting the last DCI format 1_0 or DCI format 1_1 in a PDCCH reception, the UE determines that the PDCCH has an index r PUCCH .

[0178] 0≤r PUCCH ≤R PUCCH -1, as

[0179]

[0180] Where N CCE,p is the number of CCEs in CORESET p for PDCCH reception in DCI format 1_0 or DCI format 1_1 as described in subclause 10.1, n CCE，p is the index of the first CCE received for PDCCH, and Δ PRI It is the value of the PUCCH resource indicator field in DCI format 1_0 or DCI format 1_1.

[0181] Table 9.2.3-2: Mapping of PUCCH resource indication field values ​​to PUCCH resources in a PUCCH resource set of minimum 8 PUCCH resources

[0182]

[0183]

[0184] If the UE detects a first DCI format 1_0 or DCI format 1_1 indicating a first resource for a PUCCH transmission with corresponding HARQ-ACK information in a time slot, and also detects a second DCI format 1_0 or DCI format 1_1 indicating a second resource for a PUCCH transmission with corresponding HARQ-ACK information in a time slot at a later time, if a PDCCH including the second DCI format is received no earlier than N symbols of the first resource from the PUCCH transmission in the time slot for UE processing capability 1 3 symbol, the UE does not expect to multiplex the HARQ-ACK information corresponding to the second DCI format in the PUCCH resource in the time slot, where for UE processing capability 1 and SCS configuration μ, for μ=0 N 3 =8, for μ = 1 N 3 = 10, for μ = 2 N 3 = 20, for μ = 3 N 3= 20, and for UE processing capability 2 and SCS configuration μ, for μ = 0 N 3 =3, for μ = 1 N 3 =4.5, for μ = 2 N 3 =9.

[0185] If the UE sends HARQ-ACK information corresponding only to PDSCH reception without corresponding PDCCH, the PUCCH resources and HARQ-ACK information for the corresponding PUCCH transmission are provided by nlPUCCH-AN.

[0186] If the UE uses PUCCH format 0 to send PUCCH with HARQ-ACK information, the UE determines the value m 0 、m cs Used to calculate the value of cyclic shift α[4.Ts38.211], where m 0 is provided by initialCycltcShift of PUCCH format 0, or if initialCyclicShift is not provided as described in subclause 9.2.1, and m is determined from the value of one HARQ-ACK information bit or from the values ​​of two HARQ-ACK information bits in Tables 9.2.3-3 and 9.2.3-4, respectively. cs .

[0187] Table 9.2.3-3: Mapping of one HARQ-ACK information bit to a sequence of PUCCH format 0

[0188] HARQ-ACK value 0 0 Sequence cyclic shift <![CDATA[m cs =0]]> <![CDATA[m cs =6]]>

[0189] Table 9.2.3-4: Mapping of two HARQ-ACK information bits to PUCCH format 0 sequence

[0190] HARQ-ACK value {0,0} {0,1} {1,1} {1,0} Sequence cyclic shift <![CDATA[m cs =0]]> <![CDATA[m cs =3]]> <![CDATA[m cs =6]]> <![CDATA[m cs =9]]>

[0191] If the UE transmits a PUCCH with HARQ-ACK information using PUCCH format 1, the UE is provided with the time-by-hour cyclic shift for m through PUCCH format 1. 0 If the UE uses the value of PUCCH format 2 or PUCCH format 3 in the PUCCH resource of the PRB sends a PUCCH with ACK HARQ-ACK, UE determines the PRB for PUCCH transmission The number is the minimum number of PRBs, which is less than or equal to the number of PRBs provided by nr0fPRBs of PUCCH format 2 or nr0fPRBs of PUCCH format 3 respectively and starts from the first PRB of the number of PRBs of And if in Q m and r is defined in subclause 9.2.5.2. If UE PUCCH is sent on PRB.

[0192] 9.2.4 UE procedures for reporting SR

[0193] A set of configurations for SR in PUCCH transmission using PUCCH format 0 or PUCCH format 1 is configured by a higher layer parameter SchedulingRequestResourceConfig.

[0194] The UE configures the PUCCH resources provided by SchedulingRequestResourceId supporting PUCCH format 0 resources or PUCCH format 1 resources as described in the subclauses. The UE also configures the periodic SR in symbols or slots. PERIODICITY And pass SR for PUCCH transmission through periodicityAndOffset. If SR PERIODICITY greater than one time slot, the UE determines that the SR transmission opportunities in the PUCCH have a number n f for [4, TS 38.211]

[0195] if

[0196] If SR PERIODICITY For a time slot, UE expects SR OFFSET =0 and every slot is an SR transmission opportunity in PUCCH.

[0197] If SR PERIODICITY Less than one time slot, if (ll 0 mid SR PERIODICIT Y )mod SR PERIODICIT Y =0 (where l 0is the value of startingSymbolIndex), the UE determines the SR transmission occasion in PUCCH to start with index l [4, TS38.211]. If the UE determines an occasion for SR transmission in PUCCH, the number of symbols available for PUCCH transmission in the time slot is less than the number of symbols provided by nrofSymbmbol. The SR transmission occasion in PUCCH is subject to the restrictions of TTE transmission as described in subclauses 11.1 and subclause 11.1.1. Only when the UE sends a positive SR, the UE sends the PUCCH in the corresponding SR configuration in the PUCCH resources. For positive SR transmission using PUCCH format 0, the UE obtains m as described in subclause 9.2.3 for HARQ-ACK information. 0 and by setting m cs =0, PUCCH as described in [4 TS 38.211]. For positive SR transmission using PUCCH format 1, the UE sends PUCCH as described in [4 TS 38.211] by setting b(0)=0.

[0198] 9.2.5 UE procedures for reporting multiple UCI types

[0199] This subclause is applicable to the case where the UE has overlapping resources for PUCCH transmissions or for PUCCH and PUSCH transmissions and each PUCCH transmission is on a single slot without duplication. Any case where PUCCH transmissions are repeated on multiple slots is described in subclause 9.2.6. If the UE is configured with multiple PUCCH resources in a slot to send CSI reports

[0200] - If the UE is not provided with a multi-CSI-PUCCH-ResourceList, or if the PUCCH resources used for transmission of CSI reports do not overlap in a slot, the UE determines the first resource corresponding to the CSI report with the highest priority [6, TS 38.214].

[0201] - If the first resource includes PUCCH format 2, and if there are remaining resources that do not overlap with the first resource in the time slot, the UE determines a CSI report having the highest priority among the CSI reports, the CSI report having corresponding resources from the remaining resources and corresponding second resources as additional resources for the CSI report

[0202] - if the first resource includes PUCCH format 3 or PUCCH format 4, and if there are remaining resources including PUCCH format 2 and not overlapping with the first resource in the time slot, the UE determines a CSI report having the highest priority among the CSI reports, the CSI report having corresponding resources from the remaining resources and corresponding second resources as additional resources for the CSI report

[0203] - As described in subclause 9.2.5.2, if the UE is provided with a multi-CSI-PUCCH-ResourceList, and if any of the multiple PUCCH resources overlap, the UE multiplexes all CSI reports in the resources from the resources provided by the multi-CSI-PUCCH-ResourceList.

[0204] The UE multiplexes the HARQ-ACK information with or without SR and makes a CSI report in the same PUCCH in the event that simultaneous HARQ-ACK-CSI is provided to the UE; otherwise, the UE discards the CSI report and includes only the HARQ-ACK information with or without SR in the PUCCH. If the UE can send multiple PUCCHs in a time slot including HARQ-ACK information and CSI reports, it is expected that the UE is provided with the same configuration of simultaneous HARQ-ACK-CSI for each of PUCCH formats 2, 3 and 4. If the UE multiplexes CSI reports including part 2 CSI reports in PUCCH resources, the UE determines the PUCCH resources and the multiple PRBs used for the PUCCH resources, or assumes that each CSI report indicates multiple part 2 CSI reports of level 1. If the UE sends multiple overlapping PUCCHs in a time slot, or sends multiple overlapping PUCCHs and multiple overlapping PUSCHs in a time slot, and when applicable, as described in the subclause

[0205] As described in 9.2.5.1 and 9.2.5.2, the UE is configured to multiplex different UCI types in one PUCCH, and at least one of the multiple overlapping PUCCHs or PUSCHs is responsive to the UE's DCI format detection, and the UE multiplexes all corresponding UCI types if the following conditions are met: If one of the PUCCH transmissions or PUSCH transmissions is responsive to the UE's DCI format detection, the UE expects the first symbol S of the earliest PUCCH or PUSCH in the group 0 , the PUCCH and PUSCH overlapped in the time slot meet the following time axis conditions:

[0206] -S 0 Not before a symbol with CP, but after the following process starts

[0207] After the last symbol of any corresponding PDSCH Where μ is responsive to the minimum SCS configuration among the SCS configurations of the PDCCH scheduling PDSCH, and the minimum SCS configuration of the group of PUSCHs for charging PUCCH, where the UE sends HARQ-ACK information in response to the reception of the PDSCH

[0208] -S 0 Not before a symbol with CP, but after the following process starts

[0209] After the last symbol of any corresponding PDSCH wherein N is the minimum SCS configuration among the SCS configurations of the PDCCH for which the PDCCH provides an SPS PDSCH release in response to the PDCCH and the minimum SCS configuration for the group of overlapping PUCCH or overlapping PUCCH and PUSCH for which the UE sends HARQ-ACK information in response to detection of the SPS PDSCH release, wherein the UE sends HARQ-ACK information in response to the SPS PDSCH release

[0210] - If there is no aperiodic CSI report multiplexed in PUSCH in a group of overlapping PUCCH and PUSCCH, then S 0 Not before a symbol with CP start but After the last symbol of

[0211] -PDCCH in DCI format scheduling PUSCH

[0212] - Any PDCCH that schedules a PDSCH or SPS PDSCH release with corresponding HARQ-ACK information in the overlapping PUCCH in the slot

[0213] where μ corresponds to the minimum SCS configuration of the PDCCH and the minimum SCS of the PDCCH for overlapping PUCCH and PUSCCH, and if there is no overlapping PUSCH, then d 2，1 =d 2，2 =0

[0214] - If there is aperiodic CSI report multiplexing in 1 overlapping group of PUCCH and PUSCH in PUSCH, then S 0 Not before a symbol with CP start, before After that, after the last symbol of the following

[0215] -PDCCH with DCI format scheduling PUSCH

[0216] Any PDCCH that schedules a PDSCH or SPS PDSCH release has corresponding HARQ-ACK information in the overlapping PUCCH in the slot

[0217] where μ corresponds to the SCS configuration of the PDCCH, the minimum SCS configuration for the group of overlapping PUCCH and PUSCH, and the minimum SCS configuration of the aperiodic CSI-RS associated with the DCI format scheduling PUSCH, for μ = 0, 1, d = 2, for μ = 2, d = 3, for μ = 3, d = 4

[0218] -N 1 、N 2 d 1,1 d 2,1 d 2,2 and z are defined in [6, IS 38.214], and κT c Defined in [4, IS 38.211].

[0219] If multiple overlapping PUCCHs are sent in a slot or multiple overlapping PUCCHs and multiple overlapping PUSCHs are sent in a slot, one of the PUCCHs includes HARQ-ACK information received in response to SPS PDSCH, and any PUSCH is not received in response to DCI format detection, the UE expects the earliest first symbol S 0 , the PUCCH or PUSCH satisfies the first timeline condition in the previous timeline conditions, except that the component associated with the SCS configuration of the PDCCH for scheduling the PDSCH or PUSCH does not exist in the timeline condition. The UE does not expect the PUCCH or PUSCH detected in response to the DCI format to overlap with any other PUCCH or PUSCH that does not meet the above timing conditions.

[0220] If one or more aperiodic CSI reports are multiplexed on the PUSCH in a group of overlapping PUCCH and PUSCH, and if symbol S 0 In the symbol Before; yes The next uplink symbol with CP starting thereafter; After the last symbol

[0221] - the last symbol of the last symbol of the aperiodic CSI-RS resource used for channel measurement, and

[0222] - the last symbol of the aperiodic CS1-1M used for interference measurement, and

[0223] - the last symbol of the aperiodic NZP CSI-RS for interference measurement, when the aperiodic CSI-RS is used for channel measurement for triggering CSI report n, and

[0224] The UE does not need to update the CSI report for the triggered CSI report n Z′, where n Z′ is defined in [6, IS 38.214], and μ corresponds to the SCS configuration of the PDCCH scheduling the PUSCH, the minimum SCS configuration of the aperiodic CSI-RS associated with the PUSCH provided by the PDCCH triggering the aperiodic CSI report, and the minimum SCS configuration of the overlapping PUCCH and PUSCH, and for μ=0, 1, d=2, for μ=2, d=3, and for μ=3, d=4.

[0225] If the UE is to send multiple PUCCHs in a time slot that includes HARQ-ACK information, SR, and CSI reports, and any PUCCH with HARQ-ACK information in the time slot meets the above timing conditions and does not overlap with any other PUCCH or PUSCH in the time slot that does not meet the above timing conditions, the UE multiplexes the HARQ-ACK information, SR, and CSI reports and determines the corresponding PUCCH for transmission in the time slot according to the following pseudo code. If the multiple PUCCHs do not include HARQ-ACK information and do not overlap with any PUSCH transmission detected by the UE in response to the UE's DCI format, the timing conditions do not apply.

[0226] if

[0227] -The UE is not provided with multi-CSI-PUCCH-ResourceList, and

[0228] - In response to SPS PDSCH reception and / or resources associated with an SR opportunity, resources for PUCCH transmission with HARQ-ACK information, the SR opportunity overlapping in time with two resources for corresponding PUCCH transmissions with two CSI reports, and

[0229] - no resources for PUCCH transmission with HARQ-ACK information that overlap in time with any previous resource allowed in response to DCI format detection, and

[0230] The following pseudo-code causes the UE to attempt to determine a single PUCCH resource based on the HARQ-ACK and SR resources and two PUCCH resources with CSI reporting:

[0231] The UE multiplexes the HARQ-ACK information and SR in the resources used for PUCCH transmission with the CSI report with higher priority, and

[0232] Do not send PUCCH with CSI reports with lower priority

[0233] Set Q to the set of resources used to transmit the corresponding PUCCH in a single time slot, where

[0234] - Resources with an earlier first symbol are placed before resources with a later first symbol

[0235] - For the same first symbol of two resources, the resource with the longer duration is placed before the resource with the shorter duration

[0236] - For two resources with the same first symbol and the same duration, the placement is arbitrary

[0237] - The above three steps for the set Q are according to the subsequent pseudocode for the function ordar(Q) or

[0238] - Exclude from set Q the resources used for negative SR transmission that do not overlap with the resources used for HARQ-ACK or CSI transmission

[0239] - Resources used to transmit HARQ-ACK information including PUCCH format 0 or PUCCH format 2, resources including PUCCH format 2 or PUCCH format 3, or PUCCH format 4 used to transmit CSI reports are excluded from set Q if the UE is not provided with simultaneous HARQ-ACK-CSI and if they overlap with any resources from the resources used to transmit HARQ ACK information

[0240] - If the UE is not provided with simultaneous HARQ-ACK-CSI and at least one of the resources used to transmit HARQ-ACK information includes PUCCH format 1, PUCCH format 3 or PUCCH format 4

[0241] - Exclude from set Q the resources including PUCCH format 3 or PUCCH format 4 used for CSI report transmission

[0242] - If a resource comprising PUCCH format 2 for transmission of CSI reports overlaps with any resource from the resources used for transmission of HARQ-ACK information, then that resource is excluded from set Q

[0243]

[0244]

[0245]

[0246] For each PUCCH resource in set Q that meets the above timing conditions, when applicable,

[0247] - If the PUCCH resources do not overlap in time with the multiplexed PUSCH transmission, the UE transmits the PUCCH using the PUCCH resources as described in subclauses 9.2.5.1 and 9.2.5.2.

[0248] -HARQ-ACK information If PUCCH resources overlap in time with PUSCH transmissions, the UE multiplexes HARQ-ACK information and / or CSI reports in the PUSCH as described in subclause 9.3 and does not send an SR. In the case where PUCCH resources overlap in time, among multiple PUSCH transmissions, the PUSCH for multiplexing HARQ-ACK information and / or CSI is selected as described in subclause 9. If the UE's PUSCH transmissions do not respond to DCI format detection and the UE multiplexes only CSI reports, as the timing condition does not apply

[0249] - If the resource is obtained from the group of resources that do not overlap with the second resource, the UE does not expect the resource to overlap with the second resource of the PUCCH transmission over multiple time slots.

[0250] Subclauses 9.2.5.1 and 9.2.5.2 assume the following

[0251] - The following resources used for transmission of UCI types are assumed to overlap in a slot before multiplexing or dropping

[0252] - The multiplexing condition of the corresponding UCI satisfies the type in a single PUCCH, and

[0253] - The UE does not transmit any time-overlapping PUSCH in the same frequency band in a time slot.

[0254] 9.2.5.1 UE procedures for multiplexing HARQ-ACK or CSI and SR in PUCCH

[0255] In the following, as determined in the set of schedulingRequestResourceId, the UE is configured to send K PUCCHs in a time slot for corresponding K SRs, which has an SR transmission opportunity overlapping with the transmission of a PUCCH with HARQ-ACK information from the UE in the time slot or the transmission of a PUCCH with a CSI report from the UE in the time slot.

[0256] As described in subclause 9.2.3, if the UE converts a PUCCH with a positive SR and up to two HARQ-ACK information bits in a resource using PUCCH format 0, the UE sends a PUCCH in the resource using PUCCH format 0 in the PRB for the HARQ-ACK information. The UE determines m for calculating the cyclic shift α [4, TS 38.211]. 0 and m cs The value of m c Determined according to the value of a HARQ-ACK information bit or the value of the information bit as shown in Table 9.2.5-1 and Table 9.2.5-2 respectively.

[0257] As described in subclause 9.2.3, if the UE sends a negative SR and a PUCCH with at most two HARQ-ACK information bits in resources using PUCCH format 0, the UE sends the PUCCH in the resources using PUCCH format 0 for the HARQ-ACK information.

[0258] Table 9.2.5-1: Mapping of values ​​for one HARQ-ACK information bit and positive SR for PUCCH format 0 sequence

[0259] HARQ-ACK value 0 1 Sequence cyclic shift <![CDATA[m cs =3]]> <![CDATA[m cs =9]]>

[0260] Table 9.2.5-2: Mapping of values ​​for two HARQ-ACK information bits and positive SR for PUCCH format 0 sequences

[0261] HARQ-ACK value {0,0} {0,1} {1,1} {1,0} Sequence cyclic shift <![CDATA[m cs =1]]> <![CDATA[m cs =4]]> <![CDATA[m cs =7]]> <![CDATA[m cs =10]]>

[0262] If the UE is to send a positive SR or a negative SR in a resource using PUCCH format 0 and send HARQ-ACK bits in a resource using PUCCH format 1 in a time slot, the UE only sends PUCCH with HARQ-ACK information bits in the resource using PUCCH format 1.

[0263] As described in subclause 9.2.3, if the UE shall send a positive SR in the first resource using PUCCH format 1 and at least two HARQ-ACK information bits in the second resource using PUCCH format 1 in the time slot, then the UE sends a PUCCH with HARQ-ACK information in the first resource using PUCCH format 1. As described in subclause 9.2.3, if the UE shall send a positive SR in the first resource using PUCCH format 1 in the time slot, and at least a negative SR in the resource using PUCCH format 1 and at least two HARQ-ACK information bits in the second resource using PUCCH format 1 in the time slot, then the UE sends a PUCCH with HARQ-ACK information in the first resource using PUCCH format 1.

[0264] As described in subclause 9.2.3, if the UE will use PUCCH format 2 or PUCCH format 3 or PUCCH format 4 in a time slot, the UE shall send a PUCCH format with 0 ACK PUCCH of HARQ-ACK information bits, The bits represent the negative or positive SR in ascending order of the value of schedulingRequestResourceId.

[0265] As described in subclause 9.2.3, if the UE is to send a resource with PUCCH format 2 or PUCCH format 3 or PUCCH format 4 in a time slot, ACK PUCCH of HARQ-ACK information bits. Represents negative or positive SR The bits are appended to the HARQ-ACK information bits in ascending order of the schedulingRequestResourceId. values ​​and the UE transmits the combined HARQ-ACK in resources using PUCCH format 2 or PUCCH format 3 or PUCCH format 4 determined by the UE as described in subclauses 9.2.1 and 9.2.3. Bit. An all-zero value for the bits represents negative values ​​for all K SRs.

[0266] As described in subclause 9.2.5.2, if the UE is to send a resource with PUCCH format 2 or PUCCH format 3 or PUCCH format 4 in a time slot, CS The PUCCH of the CSI report bit will represent the corresponding negative SR or positive SR in ascending order of schedulingRequestResourceId. bits are pre-added to the CSI information bits, and the UE sends a PUCCH with a combination of Bit. An all-zero value for the bit represents negative SR values ​​for all K SRs.

[0267] If the UE includes PUCCH format 2 or PUCCH format 3 is used to send PUCCH with ACK HARQ-ACK information bits, SR bit and O CRC If the CRC bit of the PUCCH is not included, the UE determines the number of PRBs used for PUCCH transmission. The number of PRBs is the minimum number of PRBs that is less than or equal to the number of PRBs provided by nrofPRB in PUCCH format 2 or nrofPRB in PUCCH format 3, and starts from the first PB of the PRB number, and the result is And if in Q m and r are defined in subclause 9.2.5.2. If UE sends PUCCH on PRB.

[0268] 9.2.5.2 UE procedures for multiplexing HARQ-ACK / SR / CSI in PUCCH

[0269] For the transmission occasion of a single CSI report, the PUCCH resources are provided by pucch-CSI-ResourceList. For the transmission occasion of multiple CSI reports, the corresponding PUCCH resources can be provided by multi-CSI-PUCCH-ResourceList.

[0270] If the UE is provided with only one PUCCH resource set for transmitting HARQ-ACK information in response to PDSCH reception scheduled by a DCI format or in response to SPS PDSCH release, the UE does not expect to be provided with simultaneous HARQ-ACK-CSI.

[0271] The UE is configured with a maximum code rate used to multiplex HARQ-ACK, SR and CSI reports in a PUCCH transmission using PUCCH format 2, PUCCH format 3 or PUCCH format 4.

[0272] If the UE sends a CSI report using PUCCH format 2, the UE transmits only wideband CSI for each CSI report [6, TS38.214]. In the following, the first part CSI report refers to a CSI report with only wideband CSI or a first part CSI report with wideband CSI and subband CST.

[0273] Expressed as

[0274] -O ACK is the total number of HARQ-ACK information bits, if any

[0275] -O SR The total number of bits. If there is no scheduling request bit 0 SR =0; otherwise As stated in subclause 9.2.5.1

[0276] - Among them, CSI-part1，n is for the priority value n The number of CSI report bits in the first part of the CSI report, O CSI-part2，n is the number of the second part CSI report for the CSI report with priority value n [6, TS 38.214] (if any), and is the number of CSI reports including overlaps.

[0277] -O CRC =O CRC，CSI-part1 +O CRC，CSI-part2 , where O CRC，CSI-part1 The number of CRC bits used to encode HARQ-ACK, SR, and part 1 CSI report bits (if any), and CRC，CSI-part2 is the number of CRC bits (if any) used to encode the part 2 CSI report bits.

[0278] In the following

[0279] -r is the bitrate given by the maximum bitrate in Table 9.2.5.2-1.

[0280] - is the number of PRBs for PUCCH format 2, PUCCH format 3, or PUCCH format 4, respectively, where Provided by PUCCH format 2 for nrofPRB of PUCCH format 2 or by PUCCH format 3 for nrofPRB of PUCCH format 3, and provided by PUCCH format 4 for nrofPRB of PUCCH format 4

[0281] -For PUCCH format 2 For PUCCH format 3 For PUCCH format 4 and among them is the number of subcarriers per resource block [4, TS 38.211].

[0282] Equal to the number of PUCCH symbols in PUCCH format 2 provided by nrofSymbol in PUCCH format 2 For PUCCH format 3 or PUCCH format 4, Equal to the number of PUCCH symbols in PUCCH format 3 or equal to the number of PUCCH symbols for PUCCH format 4 provided by nrofSymbol for PUCCH format 3 or nrofSymbol for PUCCH format 4, respectively And exclude the number of symbols used for DM-RS transmission of PUCCH format 3 or PUCCH format 4 respectively [4, TS 38.211].

[0283] - For PUCCH format 3 or PUCCH format 4, if pi / 2-BPSK is the modulation scheme, Q m =1; if QPSK is the modulation scheme shown by pi2BPSK, then Q m =2. For PUCCH format 2, Q m =2

[0284] If the UE has one or more CSI reports and zero or more HARQ-ACK / SR information bits to send in the PUCCH, where the HARQ-ACK (if any) is a response to a PDSCH reception but does not have a corresponding PDCCH

[0285] As described in subclause 9.2.1, for PUCCH format 2 and / or PUCCH format 3 and / or PUCCH format 4, if any CSI reports are overlapping and the UE is provided with a muliti-CSI-PUCCH-ResourceList with J ≤ 2 PUCCH resources in a slot, where the resources are indexed in ascending order according to the product of the multiple corresponding REs, the modulation order Q m , and the configured bit rate r;

[0286] -if The UE uses PUCCH format 2 resource 0, or PUCCH format 3 resource 0, or PUCCH format 4 resource 0

[0287] - Otherwise if

[0288] as well as

[0289] 0≤j<J-1, the UE sends HARQ-ACK information, SR and CSI report in its respective PUCCH, where the UE uses PUCCH format 2 resource j+1, or PUCCH format 3 resource j+1, or PUCCH format 4 resource j+1.

[0290] - Otherwise, the UE uses PUCCH format 2 resource J-1, or PUCCH format 3 resource J-1, or PUCCH format 4 resource J-1, and the UE selects CSI reports are used for transmission with HARQ-ACK information and SR (if any) in ascending priority, as in [6, TS 38.214]

[0291] - Otherwise, the UE sends the PUCCH resource provided by pucch-CSI-ResourceList. ACK +O SR +O CSI +O CRC bits and is determined as described in subclause 9.2.5.

[0292] If the UE has HARQ-ACK, SR and wideband or subband CSI reports to send, and the UE determines PUCCH resources with PUCCH format 2, or the UE has HARQ-ACK, SR and wideband CSI reports [6, TS 38.214] to send, and the UE determines PUCCH resources with PUCCH format 3 or PUCCH format 4, where

[0293] - the UE determines the PUCCH resources according to the PUCCH resource set provided to the UE for HARQ-ACK transmission according to DCI format 1_0 or DCI format 1_1 with the value of the PDSCH-to-HARQ Feedback Timing Indicator field indicating the same slot for PUCCH transmission using the PUCCH resource indicator field in the last DCI format 1_0 or DCI format 1_1 [5, TS 38.212], and

[0294] - As described in subclauses 9.2.1 and 9.2.3, the UE is for O UCI UCI bits determine the PUCCH resource set

[0295] as well as

[0296] - As described in subclauses 9.2.3 and 9.2.5.1 if UE satisfies the Minimum quantity PRB To send HARQ-ACK, SR and CSI report bits.

[0297] - Otherwise, UE Report Selection Reports, for transmission along with HARQ-ACK and SR in ascending order of priority [6, TS 38.214], where The value of satisfies the following conditions

[0298] as well as

[0299]

[0300] Among them, CRC，CSI-part1，N is corresponding to bits, and the number of CRC bits. CRC，CSI-part1，N+1 i is corresponding to The number of CRC bits.

[0301] If the UE has HARQ-ACK, SR and sub-band CSI reports to send, and the UE determines PUCCH resources with PUCCH format 3 or PUCCH format 4, where

[0302] - The UE determines the PUCCH resources according to the PUCCH resource set provided to the UE for HARQ-ACK transmission according to the DCI format 1_0 or DCI format 1_1 with the value of the PDSCH-to-HARQ feedback timing indicator field indicating the same slot for the PUCCH transmission using the PUCCH resource indicator field in the last DCI format 1_0 or DCI format 1_1 [5, TS38.212]

[0303] - As described in subclauses 9.2.1 and 9.2.3, the UE is for O UCI UCI bits determine the PUCCH resource set

[0304] as well as

[0305] - As described in subclauses 9.2.3 and 9.2.5.1 if UE satisfies Minimum quantity PRB To send HARQ-ACK, SR and CSI report bits.

[0306] -otherwise,

[0307] If for Part 2 CSI report priority value, it is as well as

[0308] The UE selects the first one according to its priority value [6, TS 38.214]. Part 2 CSI reporting for HARQ-ACK, SR and Part 1 CSI reports are transmitted together, where O CSI-part，1n It is for Part of CSI report 1 Number of CSI report bits, O CSI-part2，n It is for Part 2 of the CSI report priority value Number of CSI report bits, 0 CRC，CSI-part2，N is corresponding to The number of CRC bits, and CRC，CSI-part2，N+1 is corresponding to The number of CRC bits.

[0309] - Otherwise, the UE discards all part 2 CSI reports and selects N part 1 CSI reports from the N CSI reports in ascending order of priority value [6, TS 38.214] for transmission along with the HARQ-ACK and SR information bits, where The value satisfies

[0310]

[0311] as well as

[0312]

[0313] Among them, CRC，CSI-part1，N is corresponding to The number of CRC bits for the UCI bits, and CRC，CSI-part1，N+1 is corresponding to Number of CRC bits for the UCI bits.

[0314] Table 9.2.5.2-1: Code rate r corresponding to the value of maxCodeRate (maximum code rate)

[0315]

[0316]

[0317] Figure 4 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0318] Despite Figure 3 Similar, but with Figure 3 Some differences are that the terminal performs repeated transmission when sending PUCCH. Generally, the transmission power of the terminal is lower than the transmission power of the base station, so there is a possibility that the uplink coverage is smaller than the downlink coverage. In order to solve this problem, a repeated transmission technology can be considered according to time. When repeated transmission is performed, the receiver can receive more energy, so the demodulation / decoding performance can be further improved.

[0319] refer to Figure 4 , shows a case where PDSCH 402 and PUCCH 404 are scheduled based on DCI transmitted via PDCCH 400. PUCCH 404 is repeatedly transmitted 4 times, and in the 5G or NR system, the repeated transmission of PUCCH is repeated in units of time slots with basically the same starting point and length.

[0320] The repeated transmission of PUCCH can be represented as shown in the following Table 5.

[0321] Table 5

[0322] 9.2.6 PUCCH repetition process

[0323] For PUCCH formats 1, 3 or 4, the UE can configure a certain number of time slots for repeated transmission of PUCCH via their respective nrofSlots

[0324] for

[0325] UE PUCCH transmission with UCI is repeated on a time slot.

[0326] - as set in nrofSymbol in PUCCH format 1, nrofSymbol in PUCCH format 3, or nrofSymbol in PUCCH format 4, each PUCCH transmissions in a slot have the same number of consecutive symbols,

[0327] - as set in startingSymbolindex in PUCCH format 1, startingSymbolindex in PUCCH format 3, or startingSymbolinder in PUCCH format 4, each PUCCH transmissions in a slot have the same first symbol,

[0328] -UE configures whether to perform frequency hopping for PUCCH transmission in different time slots through interslotFrequencyHopping (frequency modulation within time slot)

[0329] - If the UE is configured to frequency hop PUCCH transmissions on different time slots, the UE performs frequency hopping in each time slot

[0330] -The UE sends PUCCH from the first PRB (set by startingPRB) in even slots and from the second PRB (set by secondHopPRB) in odd slots. The slot number indicated to the UE for transmitting the first PUCCH is 0, and each subsequent slot until the UE The PUCCH is sent in the timeslot, and it is included in the calculation regardless of whether the UE sends PUCCH in the timeslot.

[0331] - The UE is not expected to be configured to perform frequency hopping for PUCCH transmissions within a slot

[0332] - If the UE is not configured to perform frequency hopping for PUCCH transmissions across different time slots, and if the UE is configured to frequency hop PUCCH transmissions within a time slot, the frequency hopping pattern between the first PRB and the second PRB is the same within each time slot.

[0333] If the UE determines that, for a PUCCH transmission in a time slot, the number of symbols available for PUCCH transmission is less than the value provided by nrofSymbol of the corresponding PUCCH format, the UE does not transmit PUCCH in the time slot.

[0334] The SS / PBCH block symbol is a symbol indicated to the UE by ssb-PositionsinBurst in SIB1 or SSB-PositionsinBurst in ServingCeilConfigCommon.

[0335] As described in subclause 9.2.3, for unpaired spectrum, the UE determines the time slot for PUCCH transmission starting from the time slot indicated to the UE. time slot, and has

[0336] - a UL symbol as described in subclause 11.1 as the first symbol, or a flexible symbol that is not a SS PBCH block symbol provided by startingSymbolindex in PUCCH-format 1, PUCCH-format 3 or PUCCH-format 4, and

[0337] - Consecutive UL symbols as described in clause 11.1, or flexible symbols that are not SS / PBCH block symbols, starting from the first symbol, equal to or greater than the number of symbols provided by nrofSymbol in PUCCH-format1, the number of symbols provided in PUCCH-format3, or the number of symbols provided in PUCCH-format 4.

[0338] As described in subclause 9.2.3, for paired spectrum, the UE determines the The time slot is the time slot starting from the time slot indicated to the UE. Continuous time slots.

[0339] If the UE will The UE shall transmit PUCCH on the first time slot and the UE shall transmit PUSCH on the second time slot number, and the PUCCH transmission shall overlap with the PUSCH transmission on one or more time slots, and when the multiplexing conditions for UCI in PUSCH specified in subclause 9.2.S are met in the overlapping time slots, the UE sends PUCCH without sending PUSCH in the overlapping time slots.

[0340] UE will not transmit in a PUCCH If the UE will send the first PUCCH in multiple time slots, send the second PUCCH in at least one or more time slots, and the transmission of the first PUCCH and the second PUCCH will overlap in some time slots, then the UCI type priority with HARQ-ACK for the number of time slots>SR>CSI with higher priority>CSI with lower priority

[0341] - The UE does not expect the first PUCCH and any second PUCCH to start in the same time slot and include UCI types with the same priority, then the UE sends the PUCCH starting from the earlier time slot and does not send the PUCCH starting from the later time slot

[0342] - If the first PUCCH and any second PUCCH do not include a UCI type with the same priority, the UE transmits a PUCCH including a UCI type with a higher priority, and does not transmit a PUCCH including a UCI type with a lower priority

[0343] The UE does not expect the PUCCH responding to DCI format detection to overlap with any other PUCCH that does not meet the corresponding timing conditions in subclause 9.2.5.

[0344] If the UE will The PUCCH is transmitted in a time slot and the UE does not receive the PUCCH due to overlap with another PUCCH transmission in the time slot. If a PUCCH is sent in a time slot of a time slot, the UE counts this time slot as The number of time slots.

[0345] Hereinafter, an example of configuring PUCCH resources and PUCCH format related information via high-level signaling (RRC) by a terminal will be described. The PUCCH resource configuration information may include at least one of a PUCCH resource identifier (resource ID) for resource allocation, a position identifier of a starting PRB, information on whether intra-slot frequency hopping is supported, and information on supported PUCCH formats.

[0346] The PUCCH resource identifier is an identifier indicating the position of the actual PUCCH resource, and the position identifier of the starting PRB is an identifier indicating the position of the PRB in one carrier, and is a parameter indicating whether intra-slot frequency hopping is supported. The PUCCH format is a short PUCCH, and includes 0, 2 and the long PUCCH format may include 1, 3 and 4. Various embodiments described in the present disclosure may be understood in the form of adding or extending the above-mentioned identifiers, and may be added in the form of a new PUCCH format.

[0347] In one embodiment of the PUCCH format, the PUCCH format may include initial cyclic shift, nrofSymbol, startingSymbolsIndex and timeDomainOCC information. In order to design a new PUCCH format, at least one parameter or value may be modified or added based on the above information.

[0348] Table 6 below shows configuration information related to PUCCH resources.

[0349]

[0350] Figure 5A is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0351] Reference Figure 5A After accessing the base station, at operation S510, the terminal may receive configuration information. The configuration information is information for data transmission / reception with the base station and may be received via a higher signal. The information configured via the higher signal may include information about the time and frequency resources allocated to the PDSCH, the MCS table number, and information about the format, time, and frequency resources in which the PUCCH is transmitted.

[0352] In operation S520, the terminal may receive control information (DCI). If the PDSCH is scheduled based on the DCI, the terminal may receive data via the PDSCH.

[0353] In operation S530, the terminal may transmit uplink control information via PUCCH. If the terminal receives data via PDSCH, the uplink control information may include HARQ-ACK information indicating whether decoding of the data is successful or failed. The uplink control information may include SR, channel quality indicator (CQI), etc.

[0354] The terminal may repeatedly transmit the same control information via the PUCCH. The PUCCH may include consecutive symbols.

[0355] The PUCCH resource can be determined based on the received configuration information and downlink control information. For example, if HARQ-ACK is sent, the HARQ-ACK information can be sent in the time slot indicated by the PDSCH to HARQ feedback timing indicator included in the DCI for scheduling PDSCH. The values ​​of each PDSCH to HARQ feedback timing indicator mapped to 1 to 3 bits are configured via a higher layer signal, as shown in Table 7. If the PDSCH to HARQ feedback timing indicator indicates k, the terminal sends the HARQ-ACK information after k time slots in time slot n, where the data has been sent via PDSCH, i.e., in time slot n+k.

[0356] Table 7

[0357]

[0358]

[0359] If the PDSCH to HARQ feedback timing indicator is not included in the DCI (e.g., DCI format 1_1) for scheduling PDSCH, the terminal sends HARQ-ACK information in time slot n+k according to the value k configured based on higher layer signaling. When the terminal sends HARQ-ACK information, the terminal can schedule PDSCH using the PUCCH resource determined based on the PUCCH resource indicator included in the DCI. Here, the ID of the PUCCH resource mapped to the PUCCH resource indicator can be configured via higher layer signaling.

[0360] The above description is only an example, and the value k may be an OFDM symbol group unit or an OFDM symbol that is not a slot. The PUCCH resource for transmitting HARQ-ACK information may be determined by, for example, a 3-bit PUCCH resource indicator including DCI format 1_1, as shown in Table 8 below.

[0361] Table 8

[0362]

[0363]

[0364] In case that multiple PUCCH resource sets are configured, the field value of the PUCCH resource indicator is mapped to one value in one PUCCH resource set configured by the resource list via a higher signal.

[0365] However, the right scope of the present disclosure is not limited thereto, and a method of configuring PUCCH resources by using only configuration information or DCI is also possible.

[0366] The method of the terminal according to FIG. %A includes: receiving configuration information including PUCCH resource information; receiving downlink control information; and repeatedly sending the same uplink control information in a PUCCH resource including consecutive symbols determined based on the downlink control information and the configuration information.

[0367] The following will refer to Figure 5B A detailed description of a method for repeatedly transmitting a PUCCH is described.

[0368] Figure 5B is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0369] Reference Figure 5B , reference numeral 500 shows a case where the terminal receives a PDSCH 508 scheduled based on downlink control information received from a base station in a time slot 502, and transmits a PUCCH 510 including HARQ-ACK information related thereto to a time slot 506 in a time slot 504.

[0370] The uplink control information includes information for scheduling the PDSCH 508 and information for scheduling the PUCCH including the HARQ-ACK information. The terminal may repeatedly transmit the PUCCH including the HARQ-ACK information for the PDSCH 508.

[0371] For example, the terminal may receive information about PUCCH repetition transmission via a higher signal. The information about repetition transmission may include the number of repetition transmissions. For example, for information about PUCCH repetition transmission, multiple sets may be configured via a higher signal, and one of these sets may be indicated via DCI. Alternatively, information on PUCCH repetition transmission may be configured via DCI.

[0372] Therefore, the terminal having received the information about repeated transmission may repeatedly transmit the PUCCH the configured number of times.

[0373] If the time point at which the terminal receives the PDSCH and then sends the PUCCH including the HARQ-ACK information by demodulation / decoding is a symbol located in the second half of a time slot, the terminal may have to send the PUCCH through two time slots on the time slot boundary. However, it is impossible for the terminal to send the PUCCH on the time slot boundary. Therefore, the terminal can allocate a PUCCH with a short symbol length, or a PUCCH with a longer symbol length can be allocated in a subsequent time slot. However, in the case of URLLC requiring ultra-low latency and high reliability, since the reliability of data transmission can be further improved by PUCCH transmission including fast and accurate HARQ-ACK information, the terminal may have to perform PUCCH transmission including HARQ-ACK information in a short time, which is the result of decoding the PDSCH based on DCI scheduling, and more time resources may also be required for higher reliability.

[0374] Therefore, as shown in the reference numeral 500 of feature 5B, a method of transmitting one PUCCH 510 multiple times may be one of the methods for solving the above-mentioned problem. For example, it may be an example showing that PUCCH transmission with a length of 12 symbols can be started at any time without considering the time slot boundary. In addition, for another purpose of PUCCH repeated transmission, when the terminal has a connection with multiple base stations, for each PUCCH transmission, the terminal can apply PUCCH repeated transmission to an operation that can form a beam and send the beam to different base stations, respectively. A method for performing PUCCH repeated transmission and various embodiments thereof are described below.

[0375] Method 1-1: PUCCH transmission starting symbol, length, and number of repeated transmissions

[0376] According to method 1-1, the PUCCH transmission start symbol, length, and number of PUCCHs or repeated transmission may be configured for the terminal, and thus the PUCCH may be transmitted in consecutive symbols.

[0377] In the case of method 1_1, PUCCH resource configuration information is configured via a higher signal, and information about specific PUCCH resources can be indicated via DCI. Information about each specific PUCCH resource may include the starting symbol, length, frequency starting position, PUCCH format, number of repeated transmissions, etc. of sending PUCCH.

[0378] For example, regarding Figure 5B The information of the PUCCH resources scheduled by the DCI in the reference numeral 500 shows the case where the PUCCH starts from the 9th symbol, has a length of 2, and includes information indicating a total of 6 repeated transmissions (initial transmission and 5 identical repeated transmissions).

[0379] Furthermore, in the case of frequency hopping, there may be inter-slot frequency hopping and PUCCH transmission specific frequency hopping. In the case of inter-slot frequency hopping, if the repeatedly transmitted PUCCH is in the same slot, the PUCCH may be located in the same frequency resource, and if the PUCCH is in different slots, the PUCCH may be located in different frequency resources. For example, the starting RB of the PUCCH repeatedly transmitted in slot 504 may be 4, while the starting RB of the PUCCH repeatedly transmitted in slot 506 may be 10.

[0380] In case of PUCCH transmission specific frequency hopping, a PUCCH transmitted in odd numbers and a PUCCH transmitted in even numbers may have different starting RBs.

[0381] The number of repeated transmissions described shows a case where the number of repeated transmissions is configured by bundling with a higher signal like other PUCCH transmission resource information. However, as another example, it is also possible to directly indicate the number of repeated transmissions based on the DCI. For example, the number of repeated transmissions can be indicated by an indicator indicating the number of repetitions designed in the form of a dynamic indication. Alternatively, the number of repeated transmissions is configured via a higher signal, but a value can be configured so that the value is applied to the PUCCH transmission resources in common, without specifically configuring the number of repeated transmissions for each information on the PUCCH transmission resources.

[0382] As another example, the dynamic indication indicating repeated transmission may be classified as a 1-bit type enabled / disabled in DCI information, or classified as a separate specific DCI format.

[0383] Alternatively, depending on the higher signal configuration, a field indicating the number of PUCCH repetition transmissions may exist in the DCI format separately from the PUCCH resource allocation information (used interchangeably with the term PUCCH resource information). For a DCI format, a PUCCH format associated with the downlink data to be allocated or the HARQ-ACK transmission corresponding thereto may be allocated. In the classification of each DCI format, specifically, the PUCCH resource allocation indicator information indicated for each DCI format may be interpreted differently, and for example, even if the PUCCH resource allocation information indicated in DCI format 1_0 and the PUCCH resource allocation information indicated in DCI format 0_0 have the same bit information, due to different higher signal configurations, the number of PUCCH formats or PUCCH repetition transmissions may be the same or different.

[0384] Method 1-2: Starting symbol and length for each PUCCH repetition transmission

[0385] Different from method 1-1, method 1-2 is a method of notifying the starting symbol and length of each PUCCH repetition transmission instead of directly notifying the number of PUCCH repetition transmissions. Figure 5B In the reference numeral 500 of the figure, the PUCCH transmission resource configuration information included in the DCI information sent by the base station can be configured as {(starting symbol, length), ...} = {(9,10), (11,12), (11,14), (1,2), (3,4), (5,6)}. Alternatively, the information can be received based on configuration information via a higher layer. Here, the number of sets indicated by the curved brackets refers to the number of actual PUCCH repetition transmissions. In addition, these sets are mapped to each other sequentially in time. Therefore, the terminal can implicitly determine that (1,2) is not the time slot in which the PUCCH is repeatedly transmitted for the first time, but the time slot that follows it. Alternatively, information indicating the subsequent time slot can be added via a separate higher layer configuration information. For example, instead of (1,2), n1 can be configured to indicate the value of the time slot after the time slot in which the PUCCH is repeatedly transmitted in the same manner as (n1+1, n1+2). Frequency hopping can be applied in the same manner as method 1-1.

[0386] Method 1-3: Starting position of PUCCH repeated transmission

[0387] In method 1-1, the starting time point of the PUCCH resource can be determined for each PUCCH resource information, so that the starting time point of the PUCCH resource can be checked by indicating the PUCCH resource information via DCI. In method 1-2, the PUCCH resource can be indicated via a resource set for repeated transmission by combining the starting position and the length respectively via RRC or DCI.

[0388] Different from the above methods, method 1-3 is a method of indicating a starting symbol of PUCCH repetition transmission based on time length information from a time point of a symbol at which PDSCH is received starting from a PUCCH resource.

[0389] According to various embodiments of the present disclosure, for the time point of receiving the PDSCH, at least one starting symbol of the PDSCH, the last symbol of the PDSCH, the symbol after the last symbol of the PDSCH, etc. may be considered. The time length may include at least the number of symbol units, the number of symbol group (sub-time slot) units, or the number of time slot units. For example, Figure 5BAs shown, a terminal that has received and successfully decoded a PDSCH resource can determine that the PUCCH repetition transmission resource is allocated from a symbol 11 symbols away from the last symbol of the PDSCH. In addition to the method for indicating the starting symbol, the description of the number of repetition transmissions and the symbol length can be applied in the same manner as described in methods 1-1 and 1-2.

[0390] As another example, if a portion of the repeatedly transmitted PUCCH transmission resources is indicated as a downlink symbol by a time slot format indicator indicated semi-statically (via an advanced signal), the terminal considers that the corresponding PUCCH repetition transmission is delayed to a subsequent transmission. Specifically, in the case where a PUCCH repetition transmission with a length of 3 symbols is repeated 4 times, if a portion of the PUCCH resources of the second repetition transmission is indicated as a downlink symbol by a time slot format indicator indicated semi-statically, the terminal delays the PUCCH resources of the second repetition transmission to a subsequent transmission and transmits, and the terminal performs a total of 4 repetition transmissions. If a portion of the repeatedly transmitted PUCCH transmission resources is indicated as a downlink symbol by a time slot format indicator indicated dynamically (via signal L1), the corresponding PUCCH transmission can be canceled. Specifically, in the case where PUCCH repetition transmission with a length of 3 symbols is repeated 4 times, if a part of the PUCCH resources of the second repetition transmission is indicated as a downlink symbol by a semi-statically indicated slot format indicator, even if the terminal is instructed to discard the PUCCH resources of the second repetition transmission and repeat the transmission scheduling 4 times, the terminal only performs 3 repetition transmissions. In the case where the terminal periodically monitors the dynamic slot format indicator, if the terminal cannot detect the slot format indicator, the terminal does not perform PUCCH transmission in the resources indicated as semi-static flexible symbols. Specifically, in the case where PUCCH repetition transmission with a length of 3 symbols is repeated 4 times, if a part of the PUCCH resources of the second repetition transmission is indicated as a semi-static flexible symbol, and it fails to receive the dynamic slot format indicator information, even if the terminal is instructed to discard the PUCCH resources of the second repetition transmission and repeat the transmission scheduling 4 times. The terminal only performs repetition transmission 3 times. In the above embodiment, the symbol length 3 is only an example and does not limit the corresponding value.

[0391] As another example, for PUCCH repetition transmission, the terminal is able to perform PUCCH repetition transmission using the concept of a subslot that is smaller than a time slot. A subslot is a unit that is smaller than a time slot including 14 OFDM symbols, and can have a value from 1 to 13 OFDM symbols. There can be one or more subslots in a time slot, and the number of OFDM symbols included in each subslot can be the same or different. For example, if the number of OFDM symbols in a subslot is 2, 7 subslots can be included in one time slot, and if the number of OFDM symbols in a subslot is 7, 2 subslots can be included in one time slot. If the number of OFDM symbols included in the subslots is different, there will be a maximum value of an OFDM symbol difference. For example, a time slot may include 4 subslots, where the number of OFDM symbols is (3, 4, 3, 4).

[0392] Similar to a time slot, a subslot can be a basic unit of transmission and operation. For each subslot, only one PUCCH including HARQ-ACK information can be sent. The UCI multiplexing and HARQ-ACK codebook structure operated for each time slot can operate in units of subslots. In order to operate in a subslot, a higher signal is configured for the terminal from the base station in advance. Specifically, the unit of the PDSCH to HARQ feedback timing indicator included in DCI format 1_0 or 1_1 is a time slot unit in Rel-15NR. However, for enhanced PUCCH transmission, in subsequent releases, the unit of the PDSCH to HARQ feedback timing indicator can be configured as a time slot or subslot via a higher signal. If the unit of the PDSCH to HARQ feedback timing indicator is configured as a subslot, the value of the PDSCH to HARQ feedback timing indicator refers to the number of subslots, and specifically, the value refers to the difference between the subslot including the end symbol of the PDSCH and the subslot of the start symbol at the start of the PUCCH transmission. In addition, the value of the PDSCH to HARQ feedback timing indicator is determined based on the interval of the subcarriers via which the PUCCH or PUSCH is transmitted. If the starting symbol index in the PUCCH resource information value indicated by the PUCCH resource indicator of the same DCI format 1_0 or 1_1 is configured in units of subslots, the value of the PDSCH to HARQ feedback timing indicator is a value calculated based on the boundary value of the subslot including the corresponding PUCCH transmission start symbol. As another example, in addition to Figure 5B In addition to the method described in, PUCCH repetition transmission based on sub-slots is also possible. This will refer to disclosures 1-4.

[0393] Method 1-4: In Rel-15NR, PUCCH repetition transmission is configured based on time slot units, as described above. Figure 4For example, a PUCCH transmitted in one slot has been repeatedly transmitted in a form having the same starting symbol position and length in a subsequent slot. Similarly, in subslot-based PUCCH repetition transmission, PUCCH resources can be repeatedly transmitted in a form having the same starting symbol and length based on a subslot in a subslot structure previously configured via a higher signal. Specifically, Figure 5B , reference numeral 580 shows a case where the PUCCH is transmitted once for each subslot in the form of a subslot unit having a length of 7 symbols, and the transmission is repeatedly performed a total of three times 590, 592, and 594. For the PDSCH 588 received in the slot 582, the HARQ feedback timing indicator with the subslot unit indicates 2 for the terminal, which means that the PUCCH is transmitted from the latter of the two subslots in the slots 584 and 586. In the PUCCH resource value information indicated by the PUCCH resource indicator, if the starting symbol index is 2 and the symbol length is indicated as 5, and if the number of PUCCH repetition transmissions is provided as 3 via the higher signal and the signal L1, the terminal starts from the third symbol of the subslots 589, 591, and 593 with respect to the symbol length of 7. And it is determined to perform PUCCH repetition transmission of a length of 5. Configuration related to the subslot may be performed in a cell unit, a CC unit, a BWP unit, a DCI format unit, a CORESET unit, a search space unit, or a RNTI unit.

[0394] Figure 5B Reference numeral 500 shows a case where PUCCH repetition transmission starts from the 9th symbol in time slot 504 and PUCCH with a length of 2 symbols is repetitively transmitted 5 times. However, if, as shown in reference numeral 520, scheduling is received so that PUCCH repetition transmission starts from the 10th symbol in time slot 524 and PUCCH with a length of 2 symbols is transmitted a total of 5 times, a situation where the third PUCCH transmission is performed on the time slot boundary may occur. Therefore, a method for solving this situation is needed, and the specific details will be described below. Reference numeral 520 shows a case where the terminal receives PDSCH 508 scheduled based on downlink control information received from the base station in time slot 522, and sends PUCCH 510 including HARQ-ACK information related thereto to time slot 526 in time slot 524.

[0395] Method 2-1: Method 2-1 is a method of discarding control information to be transmitted in the PUCCH resource part including the slot boundary and then transmitting the control information at the start symbol of the slot. The discarded information may not be transmitted, or may be transmitted in resources after the allocated PUCCH resources.

[0396] According to method 2-1, as shown in reference numeral 520, the terminal may determine that the third transmission is invalid, and may transmit the fourth PUCCH to be transmitted based on the valid uplink symbol 511 that first starts at the time slot boundary. Figure 5B In the reference numeral 520 of FIG. 3 , if the third transmission is assumed to be dropped, but the repeated transmission is based on the actual transmission rather than the scheduling. The terminal can repeatedly transmit the PUCCH 510 having a length of 2 symbols 4 times, as shown above, except for the time slot boundary part, and then the PUCCH 510 can be transmitted once at symbol 2, so that repeated transmission can be performed 5 times.

[0397] Method 2-2: Method 2-2 is a method of discarding control information to be transmitted in a PUCCH resource part including a slot boundary, clearing the PUCCH resource part, and transmitting control information. The discarded information may not be transmitted, or may be transmitted in resources after the allocated PUCCH resources.

[0398] According to method 2-2, the terminal may determine that the third transmission is invalid, as indicated by reference numeral 540, and may perform the remaining PUCCH repetition transmissions as previously configured. This method differs from method 2-1 in that the PUCCH is not transmitted on the first symbol of the time slot. Reference numeral 540 shows a case where the terminal receives a PDSCH 548 scheduled based on downlink control information received from the base station in time slot 542, and transmits a PUCCH 550 including HARQ-ACK information related thereto in time slots 544 to 546. Alternatively, if it is assumed that the third transmission is dropped, but the repetition of transmission 5 times is based on actual transmission rather than scheduling, in Figure 5B In the reference numeral 540, the terminal can repeatedly transmit the PUCCH 550 having a length of 2 symbols 4 times, as shown above, except for the time slot boundary part, and then the PUCCH 510 can be transmitted once more at symbol 2, so that repeated transmission can be performed 5 times.

[0399] Method 2-3: Method 2-3 is a method of transmitting control information by segmenting a PUCCH resource part including a slot boundary based on a slot boundary. The control information may be transmitted only in a part of the segmented PUCCH resource part, or the control information may be transmitted in each of all segmented PUCCH resources.

[0400] According to method 2-3, as shown in reference numeral 560, the third repeated transmission may be divided into two different PUCCH transmissions 572 and 573 by the time slot boundary and transmitted separately. Reference numeral 560 shows a case where the terminal receives a PDSCH 566 scheduled based on the downlink control information received from the base station in time slot 562, and sends PUCCH 570, 572 or 573 including HARQ-ACK information related thereto in time slot 564 to time slot 566. Alternatively, if one PUCCH transmission time resource is divided into two or more PUCCH transmissions by a time slot boundary or DL / UL switching, the corresponding PUCCH transmission may be discarded according to the symbol length of the divided PUCCH transmission. For example, in the case where PUCCH repeated transmission is performed in the form of PUCCH formats 1, 3 and 4 supporting a length of 4 symbols or longer, if the time resource of a specific PUCCH in the PUCCH divided by the time slot boundary has a length of less than 4 symbols, the terminal is able to discard the divided PUCCH transmission. Alternatively, instead of dropping segmented PUCCH transmission, the terminal may transmit UCI via PUCCH by using PUCCH formats 0 and 2 supporting PUCCH transmission of 2 symbols or less.

[0401] Alternatively, the terminal may perform only one PUCCH 570 or 572 transmission for the segmented PUCCH.

[0402] In the case of frequency hopping, there are intra-slot frequency hopping and inter-slot frequency hopping in the NR or 5G system, where intra-slot frequency hopping means that if the PUCCH is scheduled in one slot, the PUCCH transmission interval is divided into two, so that the PUCCH is transmitted in different frequency bands. Generally, if the PUCCH transmission length is N, the length includes two PUCCHs with the highest (N / 2) and the lowest (N / 2) lengths, and the frequency band is determined by the size of the BWP configured for the terminal and the starting frequency value pre-configured via the higher signal.

[0403] Inter-slot hopping means that if one PUCCH is repeatedly transmitted over multiple slots, hopping is applied to each slot. For example, inter-slot hopping means that the PUCCH is repeatedly transmitted in different frequency bands in each slot. Specifically, the PUCCH transmitted in even-numbered slots has the same frequency band. Similarly, the PUCCH transmitted in odd-numbered slots has the same frequency band. Here, the length of the PUCCH transmission for each slot is the same.

[0404] exist Figure 5A and Figure 5BIn the PUCCH repetition transmission proposed in , PUCCH hopping can be applied to each PUCCH transmission interval separately from the above-mentioned intra-slot hopping or inter-slot hopping. For example, if PUCCH repetition transmission occurs 4 times in total, the transmission band can be determined according to the time point when PUCCH repetition transmission is performed.

[0405] For example, if PUCCH 1 (i=1, 2, 3, 4) is repeatedly transmitted, PUCCH 1 and PUCCH 3 can be transmitted in the same frequency band, and PUCCH 2 and PUCCH 4 can be transmitted in the same frequency band. PUCCH 1 and PUCCH 2 can be determined as different values ​​according to the frequency value configured via the higher signal and BWP bandwidth size. Even if one PUCCH transmission in the PUCCH repeated transmission is scheduled based on a specific situation (downlink symbol allocation or scheduling on the time slot boundary), if the actual transmission is canceled, the value i may have a different definition. Therefore, i can refer to the time point (moment) when the terminal actually sends the PUCCH or the time point (moment) when the PUCCH is scheduled for the terminal.

[0406] If according to the above reference Figure 5A and Figure 5B If the frequency hopping for repetition between mini-slots of the described method is not enabled by a higher signal, the terminal transmits as follows. Based on the antenna port used for uplink transmission, the channel of a specific symbol can be inferred from the channel of another symbol in the same mini-slot transmission. If the frequency hopping for repetition between mini-slots is enabled by a higher signal, the terminal transmits as follows. Based on the antenna port used for uplink transmission, the channel of a specific symbol can be inferred from the channel of another symbol in the same mini-slot transmission.

[0407] The mini-slot hopping scheme may be applied only to PUCCH formats 1, 3, and 4 of length 4 or longer, or the terminal may consider disabling mini-slot hopping in the case of applying mini-slot repetition. Mini-slot repetition may be applicable to all PUCCH formats 0, 1, 2, 3, and 4, or may be applicable only to a portion of the PUCCH formats.

[0408] The following method was applied to group and sequence hopping.

[0409] Table 9

[0410] Sequence group u=(f gh +f ss ) mod 30, the sequence number v in the group depends on the upper layer parameter pucch-GroupHopping. If pucch-GroupHopping is equal to 'neither', then

[0411] f gh =0

[0412] f ss =n ID mod30

[0413] v=0

[0414] Where p is given by the upper layer parameter hoppingld (hopping ID) (if configured), otherwise

[0415]

[0416] - If pucch-GroupHopping is equal to 'enable'

[0417]

[0418] f ss =n ID mod 30

[0419] v=0

[0420] where the pseudo-random sequence c(i) is defined in clause 5.2.1 and shall be initialized at the beginning of each radio frame with where n ID Given by the upper layer parameter hoppingid (if configured), otherwise

[0421] If pucch-GroupHopping is equal to 'disable'

[0422] but

[0423] f gh =0

[0424] f ss =n ID mod 30

[0425]

[0426] where the pseudo-random sequence c(i) is defined in clause 5.2.1 and shall be initialized at the beginning of each radio frame with where n ID Given by the upper layer parameter hoppingid (if configured), otherwise

[0427] If intra-slot frequency hopping is prohibited by the upper layer parameter intraSlotFrequencyHopping, the frequency hopping index n hop= 0. If frequency hopping is enabled by the upper layer parameter intraSlotFrequencyHopping, then for the first hop n hop =0, for the second hop n hop =1.

[0428] When each hop frequency number is determined by the actual PUCCH repetition number or the nominal PUCCH repetition number, if mini-slot hopping is disabled by upper layer signaling, the hopping index n hop = 0, if mini-slot hopping is enabled by upper layer signaling, mini-slot hopping is for even hopping frequencies n hop =0, for odd frequency hopping n hop =1.

[0429] Alternatively, if upper layer signaling disables mini-slot hopping, the hopping index n hop = 0, if upper layer signaling enables mini-slot frequency hopping, the frequency hopping index n hop =n, where n, which is determined by the actual number of repetitions or the nominal number of repetitions, is the frequency hopping index, and the frequency hopping index starts from 0.

[0430] In the above method, the nominal repetition is defined as the number of scheduled PUCCH repetition transmissions. Figure 5B In the reference numeral 560 of FIG. 5 , the nominal number of repetitions of the PUCCH repetition 570 is 5. On the other hand, the definition of the actual repetition includes that the PUCCH repetition scheduled by DL / UL switching or the actual time slot boundary is segmented and repeatedly transmitted. For example, in Figure 5B In the reference numeral 560 of FIG. 1 , PUCCH repetition 570 includes specific PUCCH transmissions 572 and 573 divided by slot boundaries, wherein the number of actual repetitions is 6. When performing actual PUCCH repetition transmission, only one of the above-described various frequency hopping methods may be used.

[0431] Fig. 6A is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0432] Figure 5A and Figure 5B A method for performing repeated transmission by a terminal using PUCCH transmission resources having the same symbol length for PUCCH transmission across time slot boundaries is described. Here, PUCCH transmission can be performed in consecutive symbols. Fig. 6A and Figure 6BIn the embodiment of the present invention, a PUCCH transmission resource is allocated for PUCCH transmission on the time slot boundary, and if the PUCCH transmission resource crosses the time slot boundary, the PUCCH transmission resource can be segmented based on the time slot boundary. Therefore, the symbol length of the first PUCCH transmission resource before the time slot boundary and the symbol length of the second PUCCH transmission resource after the time slot boundary can be determined, and the terminal can repeatedly send PUCCH in the first PUCCH transmission resource and the second PUCCH transmission resource. The basic PUCCH format group sent by the terminal is also determined by the determined symbol length. For example, a PUCCH format supporting 1 to 2 symbols or a PUCCH format supporting 4 to 14 symbols can be determined according to the length of the segmented PUCCH transmission resource. The details will be described below.

[0433] refer to Fig. 6A Referring to reference numeral 600, if a PUCCH resource 608 having a length of 8 symbols is allocated from the fourth symbol of the time slot 602, the terminal may send control information including HARQ-ACK, SR or CSI report information to the base station in the corresponding transmission resource. Fig. 6A The PUCCH resources described in are determined based on DL DCI for scheduling PDSCH to resources corresponding to PDSCH. Alternatively, the PUCCH resources described are determined based on UL DCI or DL ​​DCI indicating UL configuration type 2 or SPS PDSCH release.

[0434] If a PUCCH resource having a length of 6 symbols is allocated from the 10th symbol of the slots 604 and 606, the PUCCH resource crosses the slot boundary, so that the PUCCH resource can be divided into a PUCCH resource 610 having a length of 4 symbols before the slot boundary and a PUCCH resource 612 having a length of 2 symbols after the slot boundary as described above. Therefore, the terminal can repeatedly transmit control information via the PUCCH resources 610 and 612.

[0435] Here, the first PUCCH resource 610 has a length of 4 symbols, and thus may apply at least one of PUCCH formats 1, 3, and 4. The second PUCCH resource 612 has a length of 2 symbols, and thus may apply at least one of PUCCH formats 0 or 2.

[0436] Therefore, control information is transmitted in different PUCCH formats through the first PUCCH resource 610 and the second PUCCH resource 612 , but the same control information may be repeatedly transmitted through the two PUCCH resources.

[0437] The PUCCH transmission resource on the slot boundary may be configured via a higher signal so that a start symbol index and a symbol length in a PUCCH transmission resource parameter indicated by a PUCCH resource indicator included in control information received by a terminal cross the slot boundary.

[0438] For example, in reference numeral 600 of FIG. 6 , if the PUCCH resource indicator indicated via the control information indicates specific PUCCH resource information, the starting symbol index associated with the corresponding information is 9, and the symbol length is 6, then the terminal may expect to perform transmission in the form of PUCCH resource 610 and PUCCH resource 612. Alternatively, the base station may indicate the starting symbol index and the symbol length value itself through different control information fields. Alternatively, as Figure 1 As shown, by using a start and length indication value (SLIV) that simultaneously indicates a starting symbol index and a symbol length corresponding to a method for allocating a PUSCH time resource region, a single value of the starting symbol and length of the PUCCH can also be provided to the terminal via a higher signal or signal L1.

[0439] exist Fig. 6A In the reference numeral 600 of , only the case where PUCCHs with different lengths and different PUCCH formats are repeatedly transmitted is described, but PUCCHs with the same length but different PUCCH formats may also be repeatedly transmitted. Alternatively, PUCCHs with the same PUCCH format but different lengths may also be repeatedly transmitted. As another example, the terminal may determine the time axis position of the PUCCH resources for repeated transmission based on the symbol length value and the distance from the last symbol of the PDSCH to the starting symbol of the PUCCH resources through control information. The last symbol of the PDSCH may refer to the last symbol of the symbols in which the PDSCH has been transmitted, or the first subsequent symbol immediately after the PDSCH has been transmitted.

[0440] Fig. 6A Reference numeral 620 shows a case where, in the case where the PUCCH transmission interval crosses the time slot boundary, at least one symbol 634 in the front part of the time slot after the time slot boundary is a downlink interval. Here, the length of the downlink interval may be allocated by the length of the PDCCH symbol or the PDSCH symbol scheduled by the base station. The PDDCH or PDSCH resources may be allocated to overlap at least a portion or all of the PUCCH resources in frequency, or may be allocated to a resource region different from the PUCCH resources.

[0441] In one embodiment of various embodiments of the present disclosure, a case where downlink symbols 634 are allocated to completely overlap in frequency will be described. In this case, the following method may be used for PUCCH repetition transmissions 630 and 632.

[0442] Method 3-1: PUCCH transmission resource allocation based on downlink symbols

[0443] According to method 3-1, when allocating PUCCH transmission resources, the base station can notify the length of the PUCCH transmission resource area regardless of the downlink symbol. Therefore, the terminal can determine that the PUCCH is sent at the remaining symbols after excluding the symbols actually used for the downlink. Here, the downlink may include semi-static downlink symbols (semi-static DL symbols), or may include dynamically indicated downlink symbols (dynamically indicated DL symbols) (via format 2_0).

[0444] For example, in Fig. 6A In the reference numeral 620 of FIG. 1 , the starting symbol index scheduled by the base station to support PUCCH repetition transmissions 630 and 632 is 9, and the symbol length is 9. Therefore, the first PUCCH resource 630 transmission may have a length of 4 symbols in slots 622 and 624 before the slot boundary, and the second PUCCH resource 632 transmission may have a length of 2 symbols, except for the downlink symbol 634 having a length of 3 symbols in slot 626 after the slot boundary. For example, the symbol length of 9 may include a first PUCCH resource 630 length of 4, a downlink symbol length of 3, and a second PUCCH 634 length of 2.

[0445] Method 3-2: PUCCH transmission resource allocation including only valid uplink symbols

[0446] According to method 3-2, when allocating PUCCH transmission resources, the base station notifies the length of the resource region where the actual PUCCH transmission is performed in addition to the downlink symbol. The terminal determines that the PUCCH is sent at the remaining symbols after excluding the symbols actually used for the downlink. For example, the downlink may include semi-static DL symbols, or may include dynamically indicated DL symbols (via format 2_0).

[0447] For example, in Fig. 6AIn the reference numeral 620 of FIG. 1 , the starting symbol scheduled by the base station to support PUCCH repetition transmission 630 and 632 is 9 and the symbol length is 6. Therefore, the first PUCCH resource 630 transmission has a length of 4 symbols in the time slot 624 before the time slot boundary, and the second PUCCH resource 632 transmission has a length of 2 symbols in the fourth symbol after the time slot boundary, and the uplink resource starts first at the fourth symbol. For example, the entire PUCCH symbol length 6 includes the first PUCCH resource 630 of length 4 and the second PUCCH 632 of length 2. The first PUCCH resource 630, the second PUCCH resource 632 and the at least one downlink symbol 634 can be determined based on the time slot boundary information determined via the higher layer message or signal L1, the symbol information (e.g., downlink symbol, uplink symbol or flexible symbol), the time slot format indicator information, etc.

[0448] Figure 6B is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0449] As described above, if the PUCCH is repeatedly transmitted according to a slot boundary or DL / UL switching, the PUCCH format or PUCCH format group may be determined according to the length of the PUCCH actually repeatedly transmitted.

[0450] Reference Figure 6B At S610, the terminal may receive PUCCH format information of the base station or configuration information associated with repetition of PUCCH transmission. As described above, the information may be indicated by DCI or configuration information transmitted via the RRC layer or a combination of information, and a detailed description is omitted.

[0451] In S620, the terminal may identify the PUCCH format (eg, the first PUCCH format) indicated by the base station, and may identify the allocated PUCCH repetition transmission resources.

[0452] In S630, the terminal may determine whether the PUCCH repetition transmission resource crosses a time slot boundary. The terminal may determine whether to change the PUCCH format based on the determination.

[0453] If the PUCCH repeated transmission resource does not cross the time slot boundary, the terminal may apply the same PUCCH format in S640.

[0454] On the other hand, if the PUCCH repetition transmission resource is allocated on the time slot boundary, at S650, the terminal may determine the PUCCH format based on the resources divided by the time slot boundary (e.g., adjacent resources before and after the time slot or resources allocated after the time slot). The terminal may apply the same PUCCH format (e.g., the first PUCCH format) or may apply different PUCCH formats (e.g., the second PUCCH format).

[0455] In addition to the PUCCH repetition transmission divided by the above-mentioned slot boundary, the same method can be applied to the PUCCH repetition transmission divided by DL / UL switching.

[0456] The UCI information in the PUCCH repeatedly transmitted by the different PUCCH formats is the same. Specifically, if the length of the PUCCH actually transmitted is 4, the terminal is configured or indicated to use at least one of PUCCH formats 1, 3, and 4 via a higher signal or DCI (or signal L1), and if the PUCCH length is 2 or shorter, the terminal can be configured or indicated to use at least one of PUCCH formats 0 and 2 in the PUCCH format via a higher signal of DCI (or signal L1). In addition to the higher signal or signal L1, the PUCCH format can also be implicitly determined based on the number of UCI bits, the amount of frequency resources, the scheduled DCI format, etc.

[0457] If a PUCCH resource having a symbol length of 3 is allocated on a symbol boundary in a PUCCH that is actually repeatedly transmitted, the terminal may discard the information to be transmitted in the corresponding resource, or may perform repeated transmission using at least one of PUCCH formats 0 and 2 having a length of 1 or 2. For example, for PUCCH transmission of length 3, the terminal may perform repeated transmission with PUCCH format 0 having lengths of 1 and 2. Alternatively, the PUCCH format having a length of 3 may be fully applied to a method different from the above method. For example, a new PUCCH format x including a length of 3 symbols may replace repeated transmission of a PUCCH (e.g., PUCCH formats 0 and 2) including the above-mentioned length 1 or 2.

[0458] Reference Fig. 6A and Figure 6B The frequency hopping method may include inter-slot frequency hopping and segment frequency hopping. In inter-slot frequency hopping, if the repeatedly transmitted PUCCH is located in different time slots, the PUCCH transmission has different frequency starting positions.

[0459] In segmented frequency hopping, if the scheduled PUCCH resources are segmented by DL / UL switching and slot boundaries according to reference numerals 600 to 620, then Fig. 6AAs shown, frequency hopping is performed for each segmented PUCCH resource. Specifically, if the segmented PUCCH transmission resource has multiple hops, the PUCCH resources corresponding to the even-numbered hops have the same frequency starting position, and the PUCCH resources corresponding to the odd-numbered hops have the same frequency starting position. The PUCCH resources of the even-numbered hops and the PUCCH resources of the odd-numbered hops may have different frequency starting positions or the same frequency positions.

[0460] Information about frequency hopping may be indicated via a higher signal or signal L1, and the information may include the symbol start position and length or frequency start position and length of each frequency hopping PUCCH. The described information may vary for each PUCCH format. When performing actual PUCCH repetition transmission, only one of the various frequency hopping methods described above may be used. Figure 5A and Figure 5B The group and sequence hopping correlation methods described in can be similarly applied to Fig. 6A and Figure 6B .However, Fig. 6A and Figure 6B and Figure 5A and Figure 5B The difference between Fig. 6A and Figure 6B Therefore, the repetition used to determine the frequency hopping can be determined by the terminal based on the actual repetition.

[0461] Figure 7 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0462] Figure 5A and Figure 5B A case is described in which a terminal repeatedly transmits control information via a PUCCH transmission resource having the same symbol length as consecutive uplink symbols for PUCCH transmission across a slot boundary. Fig. 6A and Figure 6B An embodiment is described, namely, if a PUCCH transmission resource is allocated for PUCCH transmission across a time slot boundary, and the PUCCH transmission resource crosses the time slot boundary, a symbol length of a first PUCCH transmission resource before the time slot boundary and a symbol length of a second PUCCH transmission resource after the time slot boundary are determined based on the time slot boundary.

[0463] refer to Figure 7 , by combining Figure 5A , Figure 5B , Fig. 6A and Figure 6B A new approach is proposed for this situation.

[0464] If the base station configures the PUCCH transmission start symbol (S), length (L), and number of repetitions (K), the length of the allocated PUCCH resource does not cross the time slot boundary; if the PUCCH resource starts within a time slot and is located within the last symbol of the time slot, the PUCCH resource follows Figure 5B Method 1-1 described in the above, and if it crosses the time slot boundary or if there is DL / UL switching, the method according to method 2-3 or Fig. 6A The method disclosed in .

[0465] For example, Figure 7 As shown in the reference numeral 700 of FIG. 1 , it is possible that the starting symbol index of PUCCH resources 706 and 708 transmitted in time slots 702 and 704 is 4, and the starting symbol index of the repeatedly transmitted PUCCH is 8. If resources are allocated so that the PUCCH is repeatedly transmitted within a time slot, the base station can transmit the PUCCH transmission starting symbol, length, and information about the number of repeated transmissions to the terminal.

[0466] like Figure 7 As shown in the reference numeral 720 of FIG. 1 , if PUCCH resources 726 and 728 span a time slot boundary, the base station may configure the PUCCH resources to start from the fourth symbol (S) in the time slot 722, have a length of 16 (L), and have a number of repeated transmissions of 4 (K), as shown in FIG. Figure 5BAs shown in method 2-3 described in . In this case, each of the PUCCH resources located in the last two symbols 730 in time slot 722 and in the first two symbols 732 in time slot 724 can be configured or assumed to be repeatedly sent. If the symbol length used for repeated transmission is different from the first indication (e.g., 4 OFDM symbols) (e.g., 2 OFDM symbols), it can be understood as indicating or implicitly indicating a PUCCH format different from the first indication PUCCH format. Finally, the PUCCH resource with a remaining symbol length of 4 in the PUCCH resource (a total length of 16 is configured for it) can include 4 symbols (such as symbol 734) allocated in time slot 722, and the terminal can repeatedly send control information by using the resource. In an embodiment of the present disclosure, a description including an example is provided, in which the length of symbols 730 and 732 configured to the time slot boundary is 2, but the case where other values ​​(e.g., 3, 4, etc.) are included according to the starting position or length of the symbol can also be fully considered. Although an example is provided in which both segmented PUCCH resources are used for repeated transmission, a method of transmitting PUCCH by using only one of the segmented PUCCH resources and discarding PUCCH transmission via the remaining resources may be considered. PUCCH repeated transmission based on a combination of methods 1-1 and 2-3 has been described above, but a method of repeatedly transmitting PUCCH via a combination of methods 1-1 and 1-2, methods 2-1 to 2-3, and methods 3-1 and 3-2 may be used.

[0467] For example, if the length of the PUCCH resource does not cross the time slot boundary, the PUCCH can be repeatedly transmitted using method 1-1, as shown in reference numeral 700. On the other hand, if Figure 7 As shown in the reference numeral 740 of FIG. 1 , in the PUCCH transmission resource configuration information included in the DCI, if the starting symbol index in the time slot 742 is 4 (S=4), the length is 14 (L=14), and the number of repeated transmissions is 1 (K=1), the terminal can be understood as being allocated a long PUCCH resource with a starting symbol index of 4 and a length of 8 in the subsequent time slot 744 and a PUCCH resource with a starting symbol index of 0 and a symbol length of 4. In this case, the terminal can be considered to perform two PUCCH transmissions in total, including an initial transmission 746 and one repeated transmission 748 in separate PUCCH resources 746 and 748. In this embodiment of the present disclosure, a case where the maximum length of a symbol is 14 is described, but the maximum length of a symbol can be set to a value greater than 14.

[0468] In various embodiments of the present disclosure, the starting symbol index indicated according to the control information transmitted from the base station may include an indicator or value generated based on the symbol length value and the distance from the last symbol of the PDSCH to the starting symbol of the PUCCH resource.

[0469] Although the above description shows that the symbol length L of PUCCH transmission is mainly the case of 2 and 4 OFDM symbols, it may be sufficient to extend it to 3 OFDM symbols. To this end, additional PUCCH formats may be further considered.

[0470] Figure 8 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0471] Reference Figure 8 , by combining Figure 5A , Figure 5B , Fig. 6A and Figure 6B The situation presents a different Figure 7 new method.

[0472] If the base station configures the PUCCH transmission start symbol (S), length (L), and number of repetitions (K), the length of the allocated PUCCH resource does not cross the time slot boundary; if the PUCCH resource starts within a time slot and is located within the last symbol of the time slot, the PUCCH resource follows Figure 5B According to method 1-1 described in , and if there is a crossing of the time slot boundary or DL / UL switching, the length of the entire resource can be determined based on the symbol length and the number of transmissions, and it can be considered that a repeated transmission occurs based on the time slot boundary.

[0473] refer to Figure 8 , if the PUCCH transmission starting symbol is 4 (S=4), the length is 4 (L=4), and the number of repeated transmissions is 2 (K=2), then in the case where the starting symbol index of the PUCCH resources 806 and 808 transmitted in time slots 802 and 804 is 4 and the starting symbol index of the repeatedly transmitted PUCCH is 8, it can be as follows Figure 8 As shown in the reference numeral 800, if resources are allocated so that the PUCCH is repeatedly transmitted within a time slot, the base station can send the PUCCH transmission start symbol, length and information about the number of repeated transmissions to the terminal.

[0474] like Figure 8 As shown in the reference numeral 820 of FIG. 1 , the base station may perform configuration for PUCCH transmission so that PUCCH transmission starts from the fourth symbol (S), has a length of 4 (L), and has a number of repeated transmissions of 4 (K). Figure 7Different from the example of, if the resources allocated for PUCCH repeated transmission cross the boundary via one time slot, the terminal and the base station can interpret the number of repeated transmissions (K) as the configured value of the resource length, instead of considering the same value as the number of actual transmissions, and the actual transmission can be repeated once in each time slot, and repeated transmission can be performed. For example, the terminal can determine whether the PUCCH resources used for repeated transmission cross the time slot boundary by calculating the starting position of the symbol, the symbol length, and the number of repetitions, and can determine that 10 symbol resources 826 are allocated in the first time slot 822 for PUCCH transmission, and 6 symbol resources 834 are allocated in the remaining time slot 824 for PUCCH repeated transmission. In an embodiment of the present disclosure, it is described that the PUCCH allocation resources end in the second time slot, but in other embodiments of the present disclosure, the PUCCH resources can be configured to be allocated even after the third time slot based on the situation where the position S and L>14. In this case, the terminal can send PUCCH three times via each time slot.

[0475] Or, if Figure 8 As shown in the reference numeral 840 of , in the PUCCH transmission resource configuration information included in the DCI, if the starting symbol index in the time slot 842 is 4 (S=4), the length is 14 (L=14), and the number of repeated transmissions is 1 (K=1), the terminal can be understood as being allocated a long PUCCH resource 846 with a starting symbol index 4 and a length 8 in the subsequent time slot 844 and a PUCCH resource 848 with a starting symbol index 0 and a symbol length 4. In this case, the terminal can be considered to perform two transmissions in total, including an initial transmission 846 and one repeated transmission 848 in separate PUCCH resources 846 and 848. This is merely an example, and in a TDD environment, two or more repeated transmissions may occur. In this embodiment of the present disclosure, a case where the maximum length of a symbol is 14 is described, but it can be considered that the maximum length of a symbol is set to a value greater than 14. Different from the embodiment in which the time slot 800 in which the short PUCCH resources are repeatedly configured and the time slot 820 in which the long PUCCH resources are repeatedly configured, the time slot 840 shows a case in which the long PUCCH resources and the short PUCCH resources are configured together.

[0476] In various embodiments of the present disclosure, the starting symbol index indicated according to the control information transmitted from the base station may include an indicator or value generated based on the symbol length value and the distance from the last symbol of the PDSCH to the starting symbol of the PUCCH resource.

[0477] Although the above description shows the case where the symbol length L of PUCCH transmission is mainly 4 OFDM symbols, it may be sufficient to extend it to 3 OFDM symbols. To this end, additional PUCCH formats may be further considered.

[0478] Fig. 9 is a schematic diagram illustrating a method for repeatedly transmitting a PUCCH according to an embodiment of the present disclosure.

[0479] Fig. 9 A non-contiguous PUCCH resource allocation method is described.

[0480] General PUCCH resource allocation information (PUCCH resources) can be configured through RRC signaling, as shown in Table 10 below. Single PUCCH resource allocation information may include at least one of a PUCCH start symbol, length, and PUCCH format type. The base station may configure a combination of the three pieces of information as PUCCH resource set allocation information, and may indicate the same information to the terminal. The set of PUCCH resource allocation information may be indicated via index information.

[0481] refer to Fig. 9 , in reference numeral 900, in order to allocate the first PUCCH 906 resources of time slots 902 and 904, the base station can configure the information shown in the following Table 10 as PUCCH resources and map the information to each index. The base station can send an index indicating one of the PUCCH resources to the terminal via high-layer signaling or DCI. Alternatively, all PUCCH resources configured via higher-layer signaling can be used. Here, the PUCCH resources may include information such as the position of the starting symbol, the symbol length, the PUCCH format type, etc. The information first considered in a single PUCCH transmission may additionally include parameters and values ​​indicating repeated transmissions. The included values ​​may be included in the table in the form of elements, or may be associated in the form of separate independent elements. The purpose of the association can be considered to prevent waste of resources by configuring elements together on the table.

[0482] Table 10

[0483]

[0484] As a method of configuring multiple PUCCH resource allocations, an extended method based on the information in the table may be considered.

[0485] In an embodiment of the present disclosure, the base station may configure multiple PUCCH resource allocation information to allocate discontinuous PUCCHs. As shown in Table 11, the PUCCH resource allocation information may be configured to include at least two groups of starting symbols / lengths and format types.

[0486] Reference Fig. 9In the reference numeral 920, in the first PUCCH resource, the PUCCH transmission start symbol can be configured as 2 (S=2), the length is configured as 4 (L=4), and the PUCCH format type can be configured as 1. For PUCCH repeated transmission, PUCCH resources 926 and 934 transmitted in time slots 922 and 924 can be allocated, where the start symbol is configured as 7 (S=7), the length is configured as 4 (L=4), and the PUCCH format type is configured as 1. The new resource configuration for configuring two pieces of PUCCH resource allocation information into a single set can be shown as {(2,4, format 1), (7,4, format 1)}, and it can be allowed to be mapped to a new index. It is described that the start symbol for PUCCH resource allocation is counted from the first symbol of the indicated or specified time slot. However, according to various embodiments of the present disclosure, a method of counting the distance from the last symbol of the PDSCH to the start symbol of the PUCCH resource is also possible.

[0487] For example, as a method of indexing and configuring PUCCH resources, the starting position of the symbol may be considered and indexed first. For example, the symbols starting from symbol 0 may be indexed first, and then the symbols starting from symbol 1 may be indexed.

[0488] As another example, the method of indexing PUCCH resources may include prioritizing and indexing PUCCH resources by considering symbol length. For example, the symbol with the shortest symbol length or the symbol with the longest symbol length may be indexed first, and then the remaining symbols may be indexed in sequence.

[0489] As another example, a method of prioritizing PUCCH format types and indexing PUCCH resources accordingly to perform indexing may be considered first. For example, indexing may be performed as PUCCH formats 0, 1, 2, 3, 4, etc., or indexing may be performed by dividing into short PUCCH format types (e.g., 0 and 2) and long PUCCH format types (e.g., 1, 3, and 4).

[0490] Table 11

[0491]

[0492] As another example, the base station repeatedly allocates resources for multiple PUCCHs, where additional information capable of configuring the symbol gap can be further added to the symbol start position, symbol length, and PUCCH format information. It is described that the start position is counted from the first symbol of the time slot. However, according to various embodiments of the present disclosure, the distance from the last symbol of the PDSCH to the start symbol of the PUCCH resource can also be counted. This information may include an explicit or implicit configuration method.

[0493] The configured symbol gap can be operated based on explicit signaling. The gap is represented by the number of OFDM symbols, such as 1, 2, 3, 4... etc., and if the gap is configured as 1, it can be understood that one OFDM symbol is included between the repetitions of the default allocated PUCCH resources. If the number of repetitions is greater than 3 (K>3), it can be understood that the interval between the first allocated PUCCH resource and the second allocated PUCCH resource and the interval between the second allocated PUCCH resource and the third allocated PUCCH resource can be one OFDM symbol. Alternatively, it can be understood that the interval between the first allocated PUCCH resource and the second allocated PUCCH resource is one OFDM symbol and the gap is not included in the second allocated PUCCH resource and the third allocated PUCCH resource.

[0494] As another example, the base station may allocate multiple PUCCH transmission resources including a symbol gap length. The symbol gap may be configured based on explicit signaling. The gap may include an element of Table 10. The above example may have the effect of reducing the number of bits indicating the position of the starting symbol.

[0495] As another example, when the base station allocates PUCCH transmission resources, allocation of resources for PUCCH repetition transmission may depend on characteristics or resource types of PDCCH.The characteristics of PDCCH may include semi-static DL symbols or dynamically indicated DL symbols (via format 2_0).

[0496] The terminal may perform different interpretations according to the operation of the base station.

[0497] For example, the terminal may not expect the presence of PUCCH repetition transmission resources that collide with semi-static DL symbols. Therefore, the terminal may expect that there will be no urgent (dynamic) downlink allocation for PUCCH repetition transmission resources, and the base station side performs scheduling so that there is no conflict.

[0498] Alternatively, when there is a conflict with a semi-static DL symbol, the terminal may not perform PUCCH repetition transmission. In this case, the terminal side may expect that there will be an emergency (dynamic) downlink allocation for PUCCH repetition resources in order to prepare for repetition transmission, and the base station side may perform configuration so that the semi-static DL symbol and PUCCH repetition resources overlap during scheduling operations.

[0499] For the base station, the count of the total number of repetitions of PUCCH transmissions in the resources allocated for PUCCH repetition transmissions may be different in the two embodiments. If it is expected that the semi-static DL symbols and PUCCH resources will not collide, the symbols will not affect the count since it is known that resources will not be allocated. On the other hand, if a collision with a semi-static DL symbol is expected (or vice versa), the resources used for PUCCH repetition transmissions may also be allocated to the resources that collide with the semi-static DL symbol. In this case, the base station may include the semi-static DL symbol in the number of repetitions (K) or the symbol length (L).

[0500] For the terminal, the operation of increasing the number of PUCCH repetition transmissions may be different in the two embodiments. Specifically, if it is not expected that there are resources for PUCCH repetition transmission, the terminal may clearly operate so as not to increase the counter of repetition transmission. On the contrary, if PUCCH repetition transmission is not performed during the conflict, the counter of repetition transmission may not increase or may increase by 1. This can be determined according to the repetition transmission performance of the terminal.

[0501] Various embodiments have described the case of semi-static DL symbols as an example of PDDCH, but spreading and operation may be sufficiently performed using dynamically indicated DL symbols (via format 2_0).

[0502] The above description Figure 7 , Figure 8 and Fig. 9 yes Figure 5A and Figure 5B as well as Fig. 6A and Figure 6B combinations of Figure 5A and Figure 5B as well as Fig. 6A and Figure 6B The various methods described in (e.g., frequency hopping, transmission method, resource allocation method, etc.) can also be applied to Figure 7 , Figure 8 and Fig. 9 Each of the .

[0503] For the control information sent via the PDCCH of the present disclosure, various schemes can be used to enhance the performance of URLLC. Various improvement factors can be specified for PDCCH, such as DCI format, CORESET, search space, CCE and blind detection scheme.

[0504] For example, in order to improve URLLC, a new DCI format may be proposed. For example, a solution extending from an existing format (e.g., DCI_format_1_2) is possible. Alternatively, although there is no new DCI, a separate RNTI for a terminal supporting URLLC services may be proposed in addition to the existing RNTI.

[0505] As another example, in order to improve URLLC, the DCI format may support a configurable size different from the existing rel-15. The DCI of rel-15 is designed to be applicable to eMBB or a general-purpose structure. On the other hand, for improved DCI, the size of unnecessary or lacking usability fields may be changed to be suitable for URLLC.

[0506] Specifically, the maximum size of the rel-16 DCI may be smaller than the rel-15 fallback DCI, and the minimum size may be reduced by 10-16 bits compared to the rel-15 fallback DCI. In order to supervise the DCI field, the size of information included in the existing DCI may be partially reduced.

[0507] The DCI field may include antenna port [0-2 bits], transmission configuration indication [0-3 bits], rate matching indicator [0-2 bits], SRS request [0-3 bits], PRB bundling size indicator [0-1 bit], carrier indicator [0-3 bits], CSI request [0-3 bits], ZP CSI-RS trigger [0-2 bits], β offset indicator [0-2 bits], SRS resource indicator [0-4 bits], repetition factor [0-2 bits], priority indication [0-3 bits], etc.

[0508] In the DCI field size of rel-16, zero padding may be supported to align the size with the rel-15 fallback DCI. The DCI field for scheduling rel-16 URLLC may not include a specific field of rel-15 DCI format 1_1, or the specific field may be configured as 0 bits. The specific fields may include MCS, NDI, RV, CBG transmission information, CGB refresh, etc. that exist at least for TB2. However, the 1-bit field for NDI and the 1-bit DCI format indicator may remain unchanged. As another example, the DCI field for scheduling rel-16 URLLC may not include a specific field of rel-15 DCI format 0_1, or the specific field may be configured as 0 bits.

[0509] As another example, to improve URLLC, additional CORESETs or extensions of search spaces may be considered. Currently, in rel-15, there are 3 CORESETs in one BWP in one cell, and 10 search spaces may be configured in one time slot. However, the CORESETs or search spaces may be additionally configured (e.g., CORESET 4 and search space 12) to be suitable for URLLC. Alternatively, specific CORESET and search space regions for URLLC transmission may be indicated within the same number of CORESETs and search spaces.

[0510] Add or modify to schedule the above rel-16URLLC DCI can support FIG. 5B to FIG. 9 Alternatively, even in the same DCI format, DCI transmitted in a CORESET, search space, or BWP configured for a rel-16 URLLC terminal may support FIG. 5B to FIG. 9 PUCCH repeated transmission described in.

[0511] Already referenced FIG. 5B to FIG. 9 Various embodiments for configuring PUCCH repetition transmission resources are described. Here, a case where various PUCCH repetition transmission resources are allocated regardless of the DCI format is shown. For example, the downlink control channel may indicate PUCCH allocation according to a rule determined by the standard. However, in FIG. 5B to FIG. 9 In the various embodiments shown, the best method can be determined differently according to the scheduling method of the base station. Therefore, the scheduling scheme can be specified as a format of downlink control information, such as a DCI format. For example, various PUCCH repetition transmission resource allocation methods can be associated or determined based on the DCI format.

[0512] For example, the method of the above embodiment can be configured according to the DCI format type of the downlink control channel. Specifically, DCI format 1_0 can follow Figure 5B Method 1-1 (PUCCH transmission starting symbol, length, and number of repeated transmissions) described in , and DCI format 1_1 may follow method 1-2 (starting symbol and length for each PUCCH repeated transmission). Different from this, each of the DCI formats of DL (DCI format 1_0, DCI format 1_1) and UL (DCI format 0_0, DCI format 0_1) may be classified based on HARQ-ACK and other UCI types.

[0513] For example, in the case where rel-15 supports repeated transmission of PUCCH in time slot units, rel-16 supports FIG. 5B to FIG. 9 If the terminal supports rel-15 and rel-16, the terminal may determine that the PUCCH information for scheduling based on rel-15 detected in the DCI supports PUCCH repetition transmission in time slot units, and the terminal may consider that the PUCCH information for scheduling based on rel-16 detected in the DCI supports PUCCH repetition transmission in time slot units smaller than the above. FIG. 5B to FIG. 9The PUCCH is repeatedly transmitted in smaller units than the time slot in the rel-15-based scheduling. The DCI for scheduling based on rel-15 may be DCI format 0_0, 0_1, 1_0, or 1_1, and the DCI for scheduling based on rel-16 may be DCI format 0_x or 1_x (x is a value other than 0 or 1).

[0514] As another example, the higher signal related to the PUCCH repetition transmission configuration in time slot units may be applied only to DCI format 0_1 ​​or 1_1, and the higher signal related to the PUCCH repetition transmission configuration in units smaller than time slots is applied to DCI format 0_x or 1_x (x is a value different from 0 or 1). In summary, the higher signal related to the PUCCH repetition transmission configuration in time slot units and the higher signal related to the PUCCH repetition transmission configuration in units smaller than time slots can be applied to different DCI formats and can be applied to each different CORESET, search space, or BWP.

[0515] In another example, as a result of decoding the downlink control channel, if the terminal determines that the DCI format is for eMBB, it may be determined to follow Figure 5B Method 1-1 and Fig. 6A Method 3-1 (considering the PUCCH transmission resource allocation including the downlink symbol at the signaling), and if the terminal determines that the DCI format is for URLLC, it can be determined to follow Figure 5B Methods 1-2 and Fig. 6A Method 3-2 (PUCCH transmission resource allocation including only valid uplink symbols). The opposite situation (and vice versa) is also possible. As a method for determining the eMBB or URLLC DCI format, the terminal may perform classification using the RNTI scrambled to the CRC of the DCI or the DCI format or a specific field in the DCI. However, the above combination is only one embodiment of the present disclosure, and all combinations of the above methods are possible.

[0516] As another example, the base station may indicate a specific CORESET and search space region for URLLC transmission, where configuration may be performed to distinguish between allocated separate CORESETs or search spaces for PUCCH repetition transmission resource configuration. For example, in the presence of CORESET 1 and CORESET 2, the DCI detected in CORESET 1 may indicate A times of PUCCH repetition transmission, while the DCI detected in CORESET 2 may indicate B times of PUCCH repetition transmission. For example, for each CORESET or search space, the PUCCH repetition transmission may always have a fixed value or a value configured separately via a higher signal.

[0517] In a specific CORESET or search space in which the terminal has successfully performed decoding, the specific CORESET and search space region used for URLLC transmission can be indicated.

[0518] Therefore, for the connection FIG. 5B to FIG. 9 Many combinations of the rule methods and DCI formats of the various embodiments described are possible, and the methods are not limited to a particular case.

[0519] Fig.10 is a schematic diagram illustrating the operation of a base station according to an embodiment of the present disclosure.

[0520] Reference Fig.10 In operation S1010, the base station may send configuration information to the terminal. The base station may send the configuration information via a higher layer (eg, RRC signaling). The configuration information may include PUCCH resource allocation information, and the details are the same as above.

[0521] Thereafter, in operation S1020, the base station may send DCI to the terminal. The DCI may include resource allocation information for sending downlink data. The DCI may include information for receiving uplink control information. For example, the DCI may include information indicating a channel PUCCH for sending control information, and the details are the same as above. Therefore, the base station may send data to the terminal based on the DCI.

[0522] Thereafter, in operation S1030, the base station may receive uplink control information. The uplink control information may include CSI, SR, HARQ-ACK information, etc. FIG. 5B to FIG. 9 As described in , the terminal may repeatedly transmit control information via the PUCCH, and the base station may repeatedly receive uplink control information.

[0523] The method of repeated transmission is the same as the above method, so it will be omitted below.

[0524] according to Fig.10 The method of the base station includes: sending configuration information including PUCCH resource information; sending downlink control information; and repeatedly receiving the same uplink control information in the PUCCH resources including consecutive symbols determined based on the downlink control information and the configuration information.

[0525] Fig.11 is a block diagram illustrating a structure of a terminal according to an embodiment of the present invention.

[0526] refer to Fig.11 , the terminal of the present disclosure may include a terminal receiver 1100 , a terminal transmitter 1104 and a terminal processor 1102 .

[0527] The terminal receiver 1100 and the terminal transmitter 1104 may be collectively referred to as a transceiver. The transceiver may send a signal to a base station or receive a signal from a base station. The signal may include control information and data. To this end, the transceiver may include an RF transmitter and an RF receiver, wherein the RF transmitter is configured to perform up-conversion and amplification of the frequency of the transmitted signal, and the RF receiver is configured to perform low-noise amplification of the received signal and down-conversion of the frequency of the received signal, etc. In addition, the transceiver may receive a signal via a radio channel, may output the signal to the terminal processor 1102, and may send a signal output from the terminal processor 1102 via a radio channel.

[0528] The terminal processor 1102 may control a series of processes so that the terminal may operate according to the above-described embodiments.

[0529] Fig.12 is a block diagram showing the structure of a base station according to an embodiment of the present disclosure.

[0530] refer to Fig.12 In an embodiment of the present disclosure, the base station may include at least one of a base station receiver 1201, a base station transmitter 1205 and a base station processor 1203.

[0531] The base station receiver 1201 and the base station transmitter 1205 may be collectively referred to as a transceiver. The transceiver may send a signal to or receive a signal from a terminal. The signal may include control information and data. To this end, the transceiver may include an RF transmitter and an RF receiver, wherein the RF transmitter is configured to perform up-conversion and amplification of the frequency of the transmitted signal, and the RF receiver is configured to perform low-noise amplification of the received signal and down-conversion of the frequency of the received signal, etc. In addition, the transceiver may receive a signal via a radio channel, may output the signal to the base station processor 1203, and may send a signal output from the base station processor 1203 via a radio channel.

[0532] The base station processor 1203 may control a series of processes so that the base station operates according to the above-described embodiments of the present disclosure.

[0533] In the drawings describing the methods of the present disclosure, the order of description does not always correspond to the order of performing operations of each method, and the sequential relationship between the operations may be changed or the operations may be performed in parallel.

[0534] Alternatively, in the drawings describing the method of the present invention, some elements may be omitted, and only some elements may be included therein without departing from the basic spirit and scope of the present invention.

[0535] Furthermore, in the method of the present disclosure, some or all of the contents of each embodiment may be combined without departing from the basic spirit and scope of the present disclosure.

[0536] The embodiments of the present disclosure described and shown in the specification and the drawings have been presented to easily explain the technical content of the present disclosure and help understand the present disclosure, but are not intended to limit the scope of the present disclosure. For example, it is obvious to those skilled in the art that other modifications and changes can be made to it based on the technical spirit of the present disclosure. In addition, as needed, the above-mentioned various embodiments can be used in combination. For example, embodiments 1, 2, and 3 of the present disclosure can be partially combined to operate base stations and terminals. In addition, although the above-mentioned embodiments have been described by NR systems, other variations based on the technical ideas of the embodiments can be implemented in other systems, such as FDD and time division duplex (TDD) LTE systems.

[0537] While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A method performed by a terminal in a wireless communication system, the method comprising: receiving physical uplink control channel (PUCCH) configuration information from a base station, the PUCCH configuration information including the number of time slots for repeated PUCCH transmission; receiving downlink control information DCI from the base station; receiving data related to a physical downlink shared channel (PDSCH) from the base station based on the DCI; as well as performing repeated PUCCH transmissions with the same uplink control information UCI on time slots based on the PUCCH configuration information, each of the time slots including a symbol, wherein the number of symbols corresponds to the length of a sub-slot, wherein the length of the sub-time slot is set to one of 2 symbols or 7 symbols, and The repeated PUCCH transmission has the same first symbol in the sub-time slot.

2. The method according to claim 1, in, The PUCCH configuration information includes a starting symbol index, and The first symbol is determined based on the starting symbol index.

3. The method according to claim 1, in, The PUCCH configuration information includes information related to a PUCCH resource set, and The DCI includes information indicating one of the PUCCH resource sets.

4. A method performed by a base station in a wireless communication system, the method comprising: Sending physical uplink control channel PUCCH configuration information to the terminal, where the PUCCH configuration information includes the number of time slots used for repeated PUCCH transmission; Sending downlink control information DCI to the terminal; Sending data related to a physical downlink shared channel (PDSCH) to the terminal based on the DCI; as well as Based on the repeated PUCCH transmission, receiving the same uplink control information UCI from the terminal in time slots based on the PUCCH configuration information, each of the time slots including a symbol, wherein the number of symbols corresponds to the length of a sub-slot, wherein the length of the sub-time slot is set to one of 2 symbols or 7 symbols, and The repeated PUCCH transmission has the same first symbol in the sub-time slot.

5. The method according to claim 4, in, The PUCCH configuration information includes a starting symbol index, and The first symbol is determined based on the starting symbol index.

6. The method according to claim 4, in, The PUCCH configuration information includes information related to a PUCCH resource set, and The DCI includes information indicating one of the PUCCH resource sets.

7. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as At least one processor configured to: receiving physical uplink control channel (PUCCH) configuration information from a base station, the PUCCH configuration information including the number of time slots for repeated PUCCH transmission; receiving downlink control information DCI from the base station, receiving data related to a physical downlink shared channel (PDSCH) from the base station based on the DCI, and performing repeated PUCCH transmissions with the same uplink control information UCI on time slots based on the PUCCH configuration information, each of the time slots including a symbol, wherein the number of symbols corresponds to the length of a sub-slot, wherein the length of the sub-time slot is set to one of 2 symbols or 7 symbols, and The repeated PUCCH transmission has the same first symbol in the sub-time slot.

8. The terminal according to claim 7, in, The PUCCH configuration information includes a starting symbol index, and The first symbol is determined based on the starting symbol index.

9. The terminal according to claim 7, in, The PUCCH configuration information includes information related to a PUCCH resource set, and The DCI includes information indicating one of the PUCCH resource sets.

10. A base station in a wireless communication system, the base station comprising: Transceiver; as well as At least one processor configured to: Sending physical uplink control channel PUCCH configuration information to the terminal, where the PUCCH configuration information includes the number of time slots used for repeated PUCCH transmission; Sending downlink control information DCI to the terminal; Sending data related to a physical downlink shared channel (PDSCH) to the terminal based on the DCI; as well as Based on the repeated PUCCH transmission, receiving the same uplink control information UCI from the terminal in time slots based on the PUCCH configuration information, each of the time slots including a symbol, wherein the number of symbols corresponds to the length of a sub-slot, wherein the length of the sub-time slot is set to one of 2 symbols or 7 symbols, and The repeated PUCCH transmission has the same first symbol in the sub-time slot.

11. The base station according to claim 10, in, The PUCCH configuration information includes a starting symbol index, and The first symbol is determined based on the starting symbol index.

12. The base station according to claim 10, in, The PUCCH configuration information includes information related to a PUCCH resource set, and The DCI includes information indicating one of the PUCCH resource sets.

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